ARTIFICIAL EYELASH EXTENSIONS AND METHODS OF MANUFACTURING SAME

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of the filing date of, and priority to, U.S. Provisional Patent Application No. 63/694,699, filed Sep. 13, 2024 entitled “ARTIFICIAL EYELASH EXTENSIONS AND METHODS OF MANUFACTURING SAME,” the entire disclosure of which is hereby incorporated herein by reference.

The present application also claims the benefit of the filing date of, and priority to, U.S. Provisional Patent Application No. 63/701,824, filed Oct. 1, 2024 entitled “ARTIFICIAL EYELASH EXTENSIONS AND METHODS OF MANUFACTURING SAME,” the entire disclosure of which is hereby incorporated herein by reference.

FIELD OF THE DISCLOSURE

The present disclosure relates to artificial eyelash extensions. More particularly, the present disclosure relates to artificial eyelash extensions for application to natural lashes and methods of making and using such artificial eyelash extensions.

BACKGROUND

Artificial eyelashes may be used to alter the appearance of natural lashes, for example, by making the natural lashes appear longer or thicker. Artificial eyelashes may be applied professionally or at home (at-home lashes) and come in a variety of formats, including individual lashes and strip lashes. The artificial lashes can be applied in many distinct ways, such as by using threading, adhesives, or even magnets. These various forms of artificial eyelashes can last from a couple of days to several weeks.

BRIEF DESCRIPTION OF THE DRAWINGS

Various embodiments of the present disclosure will be understood more fully from the detailed description given below and from the accompanying drawings. In the drawings, like reference numbers may indicate identical or functionally similar elements. Embodiments are described in detail hereinafter with reference to the accompanying figures, in which:

FIG. 1A is a perspective view of an artificial eyelash extension unit being applied to natural lashes according to an embodiment of the present disclosure.

FIG. 1B is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 1C is a side view of the artificial eyelash extension unit of FIG. 1B.

FIG. 2A is a diagrammatic side view of an artificial eyelash extension unit being applied to natural lashes according to an embodiment of the present disclosure.

FIG. 2B is a diagrammatic cross section of the artificial eyelash extension unit of FIG. 2A along line A-A.

FIG. 2C is a diagrammatic cross section of the artificial eyelash extension unit of FIG. 2A along line B-B.

FIG. 3 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 4 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 5 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 6A is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 6B is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 7 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 8 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 9 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 10 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 11 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 12 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 13 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 14 is a flow chart depicting a method according to one or more embodiments of the present disclosure.

FIG. 15A is a side view of an artificial lash according to an embodiment of the present disclosure.

FIG. 15B is a side view of a curled artificial lash according to an embodiment of the present disclosure.

FIG. 16 is a side view of an artificial lash curling apparatus according to an embodiment of the present disclosure.

FIG. 17A is a perspective view of an artificial lash curling system according to an embodiment of the present disclosure.

FIG. 17B is a rotated perspective view of the artificial lash curling system shown in FIG. 15A according to an embodiment of the present disclosure.

FIG. 18A is a top view of a lash band according to an embodiment of the present disclosure.

FIG. 18B is a top view of a lash band according to an embodiment of the present disclosure.

FIG. 18C is a top view of a lash band according to an embodiment of the present disclosure.

FIG. 19A a is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 19B a is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 19C a is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 19D a is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 19E a is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 19F a is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20A is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20B is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20C is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20D is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20E is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20F is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20G is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20H is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20I is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20J is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20K is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20L is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20M is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 20N is a cross-sectional view of a knotted area of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 21A is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 21B is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 21C is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 21D is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 22A is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 22B is a second top view of the artificial eyelash extension unit of FIG. 20A.

FIG. 22C is a bottom view of the artificial eyelash extension unit of FIG. 20A.

FIG. 23A is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 23B is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 23C is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 23D is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 23E is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 23F is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 23G is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 23H is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 23I is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 23J is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 23K is a bottom view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 24A is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 24B is a top view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 25 is a perspective view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 26 is a perspective view of an artificial eyelash extension unit system according to an embodiment of the present disclosure.

FIG. 27 is a perspective view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

FIG. 28 is a perspective view of an artificial eyelash extension unit according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

The following disclosure provides many different embodiments or examples. Specific examples of components and arrangements are described below to simplify the present disclosure. These are, of course, merely examples and are not intended to be limiting. In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The entire disclosures of U.S. Pat. No. 12,127,617 entitled “EYELASH EXTENSION SYSTEM AND METHODS,” and U.S. Pat. No. 12,059,046 entitled “LASH BAND FOR ARTIFICIAL LASHES,” are hereby incorporated herein by reference.

Referring to FIG. 1A, an artificial eyelash extension unit 10 is configured to be applied to upper natural lashes 20. In some embodiments, the extension unit 10 is configured to be applied to an underside of the upper natural lashes 20. The application of the extension unit 10 includes applying a bridge 18 to at least one of the extension unit 10 and the upper natural lashes 20. The adhesive 18 is water-proof or water-resistant once dried, that is the adhesive 18 is not water-soluble. The adhesive 18 is soluble in an oil-based solvent, such as an oil-based makeup remover or coconut oil. The adhesive 18 is configured to bond the extension unit 10 to the upper natural lashes 20 for at least 3 days, at least 5 days, at least 6 days, or at least 7 days of ordinary use. The adhesive 18 may be a polymer-based adhesive and may include (meth)acrylate polymers and/or copolymers.

Although FIG. 1A shows the extension unit 10 being applied to an underside of the natural lashes 20, the extension unit 10 may be alternatively or additionally applied to a top side of the natural lashes 20. In such an embodiment, the adhesive 18 may be applied to the underside of the extension unit 10 and the top side of the natural lashes 20 in a similar fashion as described above. In additional embodiments, the extension unit 10 may be applied to a top side or an underside of lower natural lashes in a similar manner as described herein for the upper natural lashes 20.

Turning to FIG. 1B, a bottom view of the artificial eyelash extension unit 10 is shown. The extension unit 10 includes a plurality of artificial lashes 12 extending from an elongated base 14 such that a proximal end 12a of each lash 12 is secured to the base 14. The proximal ends 12a of the lashes may be secured to the base 14 using, for example, a bridge. One or more extension units 10 may be applied to the natural lashes of a single eye, wherein an average width of natural lashes is about 28 mm to 30 mm. In some embodiments, the base 14 may have a length of about 2 mm to about 20 mm, about 3 mm to about 15 mm, about 4 mm to about 10 mm, about 5 mm to about 9 mm, or about 7 mm. In some embodiments, the extension units are sized such that 1 to 8, 2 to 6, or 3 to 4 extension units 10 are to be applied to each eye.

In some embodiments, the lashes 12 are grouped into one or more clusters 16, each cluster 16 including a plurality of lashes 12 bound together and being secured to the base 14. In some embodiments, each extension unit 10 includes at least two clusters 16 secured to the base 14. Two or more lashes of the plurality of lashes 12 within a single cluster 16 may be bound together by a bridge or a fastener, such as lashing wrapped around the plurality of lashes 12, at a cinch point 16a. In some embodiments, the cinch points 16a do not include a heat fusion. In some embodiments, the extension unit 10 does not include any heat-fused lashes. That is, in such embodiments, none of the plurality of lashes 12 is bonded to the base 14 or any other artificial lash using heat fusion and the extension unit 10 does not include any junctures formed by heat fusion. In some embodiments, the cinch point 16a is spaced from the proximal end 12a of the lashes. In some embodiments, the cinch point 16a is also spaced from the base 14 such that the cinch point 16a does not contact the base 14. In some embodiments, the cinch point 16a is spaced at least 1 mm, at least 2 mm, or at least 3 mm from the base 14. In some embodiments, all of the plurality of lashes 12 within the cluster 16 are bound to one another at the cinch point 16a. In other embodiments, some of the plurality of lashes 12 may not be bound at the cinch point 16a.

In some embodiments, the clusters 16 are discrete between the base 14 and a distal end of the cinch points 16a. That is, the plurality of lashes 12 of any one cluster 16 do not cross, overlap, or intersect with the plurality of lashes 12 of any other cluster of the extension unit 10 from the base 14 to beyond the cinch point 16a. In such embodiments, the cinch points 16a are likewise discrete and are in a one-to-one relationship with their respective cluster 16. That is, the cinch points 16a do not cross, intersect, or overlap one another. In some embodiments, the clusters 16 are each independently and discretely cinched at the cinch points 16a, such that a number of cinch points 16a is equal to a number of clusters 16 and each cinch point 16a only cinches artificial lashes from a single cluster 16.

Turning to FIG. 1C, each of the lashes 12 extends from its proximal end 12a to a distal end 12b. A length from proximal end 12a to distal end 12b (shown in FIG. 2A as length L₁) may vary among the lashes 12 of the extension unit 10. In some embodiments, the lashes 12 of the extension unit 10 may have an average length of about 6 mm to about 18 mm, about 8 mm to about 16 mm, about 10 mm to about 14 mm, about 10 mm, about 12 mm, or about 14 mm. The lashes 12 may be straight or may have a generally curved profile wherein a degree a curvature may vary among the lashes 12 of the extension unit 10. In some embodiments, a depth D of the extension unit 10 may be at least about 6 mm, at least about 4 mm, or at least about 2 mm. The depth D is measured as a maximum transverse distance between two lash distal ends 12b when viewed in a projection onto a plane that is perpendicular to the elongated base 14 (for example, as shown in FIG. 1C). In some embodiments, a ratio between the average length of the lashes 12 and the depth D is at most about 10, at most about 5, at most about 3, or at most about 2.

Turning to FIG. 2A, a diagrammatic view of an application process is shown. In particular, natural lashes 20 extend from the eyelid 22, from the root 20a to the distal end 20b. In the pictured embodiment, the adhesive 18 is applied to a portion of the natural lashes 20 from the root 20a to a mid-point of the natural lashes 20. Also shown are the artificial lashes 12 mounted to the base 14 at a proximal end 12a and extending to a distal end 12b. The adhesive 18 is applied to an entire upper surface of the base 14. In some embodiments, the adhesive 18 may be applied to a portion of the artificial lashes 12, e.g., as a result of the adhesive 18 running off of the base 14 onto the artificial lashes 12 or due to imprecise application by a user. As shown by the arrows, the artificial lashes 12 are positioned under the natural lashes 20 such that the adhesive 18 on the base 14 comes into contact with the natural lashes 20 and the adhesive 18 on the natural lashes 20, thereby adhering the artificial lash 12 (and the extension unit 10) to the natural lash 20.

In any embodiment described herein, the extension unit 10 may be a baseless extension, wherein the “base” referred to herein is a bridge which, in several example embodiments, may be an “adhesive bridge” such as, for example, a pressure-sensitive adhesive (PSA), an epoxy, a resin, a glue, a tape, such as a double-sided tape, or combinations thereof, and said adhesive bridge temporarily or permanently joins together the artificial lashes 12 or clusters thereof in the extension unit 10. In some embodiments, the adhesive bridge is the only adhesive used to connect the artificial lashes 12 to one another or to connect clusters of the artificial lashes 12 to one another, wherein a secondary adhesive may be used to adhere, secure, affix, or connect the extension unit 10 or artificial lashes 12 to natural lashes 20. In some embodiments, the artificial lashes 12 may be adhered to one surface of the adhesive bridge, and an opposite surface of the adhesive bridge may be tacky or non-tacky. In some such embodiments, the opposite surface of the adhesive bridge is tacky and may be used to adhere the extension unit 10 to the natural lashes 20 (e.g., the adhesive bridge may be a double sided tape with the artificial lashes 12 adhered to one surface, and the opposite surface may be configured to adhere to the natural lashes 20, e.g., at an underside thereof).

In some embodiments, the artificial lashes 12 may be embedded within a bridge such as the adhesive bridge and one, both, or neither surface of the adhesive bridge may be tacky. An artificial lash 12 may be considered embedded if, at any position along the length L₁ of the artificial lash 12, a full circumference (or, for a non-cylindrical artificial lash, a full perimeter) of said artificial lash 12 is contacted by the adhesive bridge (or the base 14 when the artificial lash 12 is embedded in the base 14). In some embodiments, the artificial lashes 12 may be embedded at a proximal end 12a thereof such that proximal surfaces (in a plane generally perpendicular to the length L₁) are also contacted by the adhesive bridge or base 14. In some embodiments, the artificial lashes 12 may be embedded at a position between the proximal end 12a and the distal end 12b such that said proximal surfaces are not contacted by the adhesive bridge or base 14. In any embodiment, all or a portion of the artificial lashes 12 in an extension unit 10 may be embedded in the adhesive bridge or base 14.

In some embodiments, the artificial lashes 12 include two or more clusters with each cluster including 2 or more individual artificial lashes 12 (e.g., about 2 to about 100, about 5 to about 50, about 5, about 10, about 20, or about 30). In some embodiments, the clusters may be formed while adhering the artificial lashes 12 to the base 14 or the adhesive bridge, e.g., by aggregating discrete artificial lashes 12, such that the base 14 or the adhesive bridge is responsible or solely responsible for connecting the artificial lashes 12 within a respective cluster to each other. In some embodiments, the clusters are pre-formed clusters, wherein the artificial lashes 12 within each cluster are adhered, secured, affixed, or connected to one another, e.g., by a bridge, lashing, knotting, or the like, prior to adhering the pre-formed clusters to the base 14 or the adhesive bridge. In any embodiment, adjacent clusters (pre-formed or not) within the extension unit 10 may be spaced from one another or not in contact at proximal ends thereof.

In some embodiments, the adhesive bridge may be formed of multiple sections that are spaced from one another and, collectively, adhere, secure, affix, or connect three or more pre-formed clusters to one another. Such sections may be positioned at the same or different longitudinal locations (along length L₁), wherein each section contacts artificial lashes 12 from two, at least two, or more than two different pre-formed clusters. As an example, an extension unit 10 may include first, second, and third preformed clusters and the adhesive bridge may include first and second sections, wherein the first section contacts one or more artificial lashes 12 from each of the first preformed cluster and the second preformed cluster at a first longitudinal position and the second section contacts one or more artificial lashes 12 from each of the second preformed cluster and the third preformed cluster at a second longitudinal position. In this example, the first longitudinal position and the second longitudinal position may each, independently, be at or near proximal ends of the respective clusters, between proximal ends and distal ends of the respective clusters, between proximal ends and midpoints of the respective clusters, at or near midpoints of the respective clusters, or between midpoints and distal ends of the respective clusters. As will be appreciated, the first section secures, adheres, affixes, or connects the first preformed cluster to the second preformed cluster, which is secured, adhered, affixed, or connected to the third preformed cluster via the second section such that the first preformed cluster is indirectly connected to the third preformed cluster. Since the artificial lashes 12 within each preformed cluster are connected to one another, the sections of the adhesive bridge, independently or collectively, do not need to contact every artificial lash 12 within the extension unit 10. In some embodiments, the extension unit 10 includes at least one artificial lash 12 that is not in direct contact with the adhesive bridge or the base 14. In some embodiments, the extension unit 10 includes at least one artificial lash 12 that is in direct contact with two or more sections of the adhesive bridge at different longitudinal positions.

In some embodiments, the extension unit 10 does not include preformed clusters and the adhesive bridge includes the multiple sections as described above, which, collectively, secure all of the artificial lashes 12 to one another. In such embodiments, each artificial lash 12 is in contact with at least one section of the adhesive bridge to directly connect said artificial lash 12 to at least one other artificial lash 12 and to indirectly connect said artificial 12 to all remaining artificial lashes 12 (that are not part of the direct connection) within the extension unit 10. Any adjacent artificial lashes 12 may be spaced from one another or aggregated into a cluster, wherein the extension unit 10 may be cluster-less or include one or more clusters.

In any embodiment, one or more or all surfaces of the adhesive bridge may have a secondary adhesive, such as any of those described above with respect to the adhesive bridge, applied to the adhesive bridge at manufacturer (pre-applied) or by a user, whether or not said surface is tacky or not. In any embodiment, the adhesive bridge may include any logical combination of one or more of the following features: integrally formed of a single composition or material; integrally formed from multiple compositions and/or materials; formed of a unitary body that is unbroken within the extension unit 10; formed of a plurality of pieces that are not in contact with one another or are detached, disjointed, separate, or disconnected from one another within the extension unit 10; having a uniform thickness or diameter; having a non-uniform thickness or diameter; having a uniform composition within the extension unit 10; having a non-uniform composition within the extension unit 10; having a transparent appearance, with or without color; having an opaque appearance, with or without color. Any one or more of the foregoing features may be combined with any one or more of the other features of the adhesive bridge described herein.

As shown in FIG. 2A, each artificial lash 12 has a length L₁, which as discussed above may vary among the plurality of artificial eyelashes 12 within the extension unit. Each of the natural lashes 20 has a length L₂, which varies along each set of eyelashes. In some embodiments, the average length of the artificial lashes 12 may be greater than an average length of the natural lashes 20. In other embodiments, the average length of the artificial lashes 12 may be less than the average length of the natural lashes 20. In yet other embodiments, the average length of the artificial lashes 12 may be equal to the average length of the natural lashes 20.

In some embodiments, the adhesive 18 is applied to both the upper natural lashes 20 and the extension unit 10. This configuration allows for a double bond that may provide better adhesion and more durability. In one or more embodiments, the adhesive 18 is be applied to the upper natural lashes 20 from a root 20a adjacent the eyelid 22 to about a mid-point of the upper natural lashes 20 between the root 20a and a distal end 20b. In some embodiments, the adhesive 18 is applied to 20-80%, 30-70%, 40-60%, or about 50% of the length L₂ of each of the upper natural lashes 20.

FIG. 2B is a cross-section of FIG. 2A along the line A-A at a position near the proximal end 12a and root 20a, where both the natural lashes 20 and the base 14 have the adhesive 18 applied to a surface thereof. Although the adhesive 18 is a shown as a solid layer in FIG. 2B, there may be spaces between the adhesive 18 across the natural lashes 20. As shown by the arrows in FIG. 2B, the adhesives 18 on the natural lashes 20 and the base 14 are to be brought into contact with one another. Turning to FIG. 2C, which is a diagrammatic cross section of FIG. 2A taken along the line B-B position between the proximal end 12a and root 20a and the distal ends 12b and 20b, the natural lashes 20 include the adhesive 18 at this position but the artificial lashes 12 do not include the adhesive 18. As indicated by the arrows, the adhesive 18 on the natural lashes 20 is to be brought into contact with the artificial lashes 12.

Turning to FIG. 3, a method 300 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. In step 310, a plurality of artificial lashes are adhered, connected, or secured to a base, such as a knotted base, a base with knots, a base including knots, a not knotless base, a knotty base, a tangled base, etc., using a bridge. In some embodiments, the adhesive is a pressure-sensitive adhesive (PSA), an epoxy, a resin, a glue, a tape, such as a double-sided tape, or combinations thereof. In some embodiments, the adhesive is a curable adhesive and cures at or below room temperature (i.e., without needing application of heat). In some embodiments, adhering the plurality of artificial lashes to the base includes embedding proximal ends of the artificial lashes into the base. As described above, in some embodiments, the extension unit is a baseless extension unit and, in such embodiments, step 310 includes adhering, affixing, securing, or connecting the plurality of artificial lashes to one another via the adhesive bridge, optionally without the use of a bridge other than that of the adhesive bridge. In step 320, the artificial lashes are wrapped around a curved mold and secured in place. In some embodiments, the mold may be a tube or pipe, the artificial lashes being wrapped an outer circumference thereof or secured inside an inner circumference thereof. In some embodiments, the artificial lashes may be secured using, e.g., a tape or wrapping. In some embodiments, the mold comprises two complementary pieces configured to secure the artificial lashes therebetween. For instance, the mold may comprise a first convex piece and a second concave piece shaped and configured to accommodate the convex piece, wherein the mold is further shaped and configured to accommodate and secure the artificial lashes between the convex piece and the concave piece. In step 330, the adhesive (or the portion of the eyelash extension unit comprising the adhesive, e.g., the base) is thermally isolated from the mold. Thermal isolation may include, e.g., wrapping the adhesive with an insulating material or otherwise positioning an insulating material between the adhesive and the mold. In some embodiments, the mold may include a conductive portion configured to accommodate the artificial lashes and an insulating portion configured to accommodate the adhesive and step 330 may comprise positioning the adhesive within the insulating portion of the mold. In some embodiments, the artificial lashes are formed of a material having low thermal conductivity such that heat applied to the artificial lashes would not affect other parts of the eyelash extension unit, such as the adhesive. In some embodiments, thermally insulating the adhesive comprises spacing the adhesive from the mold (i.e., an air gap). In step 340, the mold is heated to curl the artificial lashes without affecting the adhesive. In step 340, no fusions are made between any portions of the eyelash extension unit. In some embodiments, the mold may be formed of a thermally conductive material and heating the mold heats the artificial lashes secure thereto or therein. In some embodiments, the heating may comprise steaming or cold steaming. In some embodiments, the heat may be applied only to the mold. In some embodiments, the mold may be placed in an oven, such as a steam oven, to heat the mold. In any embodiments, the heat does not alter, modify, or otherwise affect the thermally insulated adhesive. In any embodiment, the heat does not form or aid in the formation of any junctions, connections, links, or unions.

Turning to FIG. 4, a method 400 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. Step 410 may include any of the features of step 310 described above. In step 420, the adhesive is fully cured. Curing the adhesive may be done in the absence of heat, i.e., at or below room temperature. A vacuum or desiccator may be used to aid in curing the adhesive. After curing, the adhesive will not be affected or altered by further processing steps, such as application of heat. Curing may include a wait time of, e.g., at least 1 hr, at least 2 hrs, at least 4 hrs, at least 8 hrs, at least 12 hrs, at least 24 hrs, at least 48 hrs, or greater than 48 hrs. During said wait time, no heat is applied to the adhesive, but conditions such as humidity may be controlled to aid in curing. In some embodiments, the adhesive is a UV-curable adhesive, provided that UV irradiation does not heat the adhesive. In some embodiments, the adhesive may include reactive components that produce heat and aid in curing of the adhesive, but no heat is applied to the adhesive. Step 430 may include any of the features of step 320 described above. Step 440 may include any of the features of step 340 described above.

Turning to FIG. 5, a method 500 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. Step 510 may include any of the features of step 310 described above. Step 520 may include any of the features of step 420 described above in the absence of heat. In step 530, the artificial lashes are curled without heat. Curling without heat may include the use of chemical agents and/or mechanical deformation. In some embodiments, chemical curling can involve placing the artificial lashes into a curved mold and applying a chemical agent to the artificial lashes (before or after positioning in the mold). In some embodiments, mechanical curling may include placing the artificial lashes in a mold, such as that described in step 320 above, and applying pressure to the artificial lashes to curl the artificial lashes. The application of pressure may differentially stretch or deform portions of the artificial lashes relative to other portions, thereby resulting in a curved or non-straight shaped. In some embodiments, mechanical curling may include placing a weight on the artificial lashes to induce curling or pressing the artificial lashes between surfaces (e.g., in a vice, clamp, or press) to induce curling. In some embodiments, mechanical curling may include contacting one surface of the artificial lashes with an implement and moving the artificial lashes relative to the implement while applying pressure. For instance, the artificial lashes may be pulled across a blade or edge to plastically deform an opposite surface to a greater degree than the surface contacting the blade or edge (or not deforming the surface contacting the blade or edge). As another example, an edge or a thin side surface of a thin, weighted implement may be drawn across the artificials lashes, which may be positioned on a hard surface. The resulting stretched side of the artificial lashes forms an outer surface of the curved shape while the unstretched or less stretched side of the artificial lashes formed an inner surface of the curved shape.

Turning to FIG. 6A, a method 600 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. Step 610 may include any of the features of steps 340 and/or 530 described above. In step 610, the artificial lashes are not attached to the base of the eyelash extension unit, but may include a temporary base or other structure configured to hold the artificial lashes in a desired position or configuration. In step 620, the artificial lashes are cooled, if necessary. That is, if step 610 results in the artificial lashes being warmer than room temperature, then the artificial lashes are returned to or below room temperature in step 620. Step 620 may include the use of a refrigerator or other cooling apparatus to expedite the cooling process. Step 630 may include any of the features of step 310 described above. Step 640 may include any of the features of step 420 described above in the absence of heat.

Turning to FIG. 6B, a method 600a of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. In step 610a, the artificial eyelashes are adhered to a temporary base and any of the features of step 310 may be used. In some embodiments, adhering may not include a bridge and may instead be achieved by mechanical fasteners, such as staples, thread, etc. In some embodiments, the temporary base may include two opposing arms configured to grasp the artificial eyelashes therebetween, wherein the arms may, e.g., be hinged and biased toward a closed position or may be fastened to one another. In step 620a, the artificial lashes or a portion thereof are curled with or without heat, such as in steps 340 and/or 530 described above. If heated, the artificial lashes are cooled, as in step 620 described above. In step 630a, the base is adhered to the artificial lashes, which may be accomplished as in step 310 described above. If a portion of the artificial lashes is curled and a portion is straight, the base may be positioned between the curled portion and the temporary base, e.g., within the straight portion or at a junction between the straight and curled portions. If the entirety of the artificial lashes is curled, the base may be positioned at any point along the curled artificial lashes (i.e., between a proximal end attached to the temporary base and a distal end opposite the proximal end). In step 640a, the temporary base is removed from the eyelash extension unit. Removing may include cutting the artificial lashes between the temporary base and the base. In some embodiments, the temporary base may be removed without cutting or damaging the artificial lashes. In such embodiments, the eyelash extension unit may include artificial lashes extending beyond the base (i.e., the portion of artificial lashes between the temporary base and the base) or the extending portions may be trimmed off.

Turning to FIG. 7, a method 700 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. In step 710, a plurality of artificial lashes are knotted together to form a knotted cluster. Knotting may include looping, twisting, tying, binding, tethering, or combinations thereof. Knotting may include the use of additional lashing apart from the artificial lashes. In step 720, the knotted clusters are adhered to a base to provide a knotted base and a knotted eyelash extension unit. Adhering the knotted clusters may include any of the features described in step 310 above. In some embodiments, adhering included knotting the knotted clusters to the base, which may include any of the knotting steps described in step 710 above. In step 730, the artificial lashes are curled, such as described in steps 340 and/or 530 above. Step 730 may precede step 710, may follow step 710 and precede step 720, and/or may follow step 720. Steps 710 and 720 may also be completed in any order and/or may be completed simultaneously, wherein the artificial lashes are knotted together and to the base in a single step.

Turning to FIG. 8, a method 800 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. In step 810, a base is knotted to form a knotted base. Knotting may include the features of step 710 described above. In some embodiments, the knotted base comprises a single knot. In some embodiments, the knotted base comprises a plurality of knots. In some embodiments, the knotted base comprises knots at positions where artificial lashes, clusters of artificial lashes, and/or knotted clusters are attached. In some embodiments, the knotted base comprises knots in positions that are free of any artificial lashes (e.g., between clusters or knotted clusters). In some embodiments, the knotted base comprises knots positioned both at positions having artificial lashes and positions free of artificial lashes. Step 820 may include any of the features of steps 310 and/or 720 above.

Turning to FIG. 9, a method 900 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. In step 910, a plurality of artificial lashes are connected or adhered to one another to form a cluster. Step 910 may be achieved using the features described in step 710 above. In some embodiments, the artificial lashes may be adhered to one another using a bridge, such as that described in step 310 above. In step 920, the base is knotted about, around, or through the cluster to secure the cluster to the knotted base and form a knotted eyelash extension unit. Any of the knotting methods described in step 710 may be employed in step 920.

Turning to FIG. 10, a method 1000 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. Step 1010 may include any of the features described in step 710 above. Step 1020 may include any of the features described in step 920 above.

Turning to FIG. 11, a method 1100 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. Step 1110 may include any of the features described in step 310 above. In step 1120, the base is knotted to form a knotted base. Any of the knotting methods described in step 920 may be employed in step 1120.

Turning to FIG. 12, a method 1200 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. Step 1210 may include any of the features described in step 810 above. Step 1220 may include any of the features described in step 710 above. Step 1230 may include any of the features described in step 920 above.

Turning to FIG. 13, a method 1300 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. In step 1310, a bridge is applied to the base. The adhesive may be any of those described herein (such as in step 310 above). The adhesive may be applied to all of the base or a portion of the base. The adhesive may be applied in spots on a single side of the base, in spots on alternating sides of the base (e.g., spot on top side longitudinally spaced from spot on bottom side), in longitudinally spaced rings each encircling the base, in strips on opposite sides of the base, or combinations thereof. In step 1320, one or more artificial lashes is looped around the base such that the adhesive is positioned between the one or more artificial lashes and the base, thereby forming a knot, a knotted base, and a knotted eyelash extension unit.

Turning to FIG. 14, a method 1400 of making an artificial eyelash extension unit according to one or more embodiments of the present disclosure is shown. Step 1410 may include any of the features described in step 1310 above. Step 1410 may include any of the features described in step 1410 above. In step 1430, ends of the one or more looped artificial lashes are crossed. In some embodiments, adhesive is applied between the crossed portion of the artificial lashes. In some embodiments, the adhesive from step 1410 may touch the crossed portion. In some embodiments, the ends are crossed once or more than once. In some embodiments, the ends are tied about the base.

In any of the methods described herein, where not explicitly stated, the method may include a curling step with or without heat to curl the artificial lashes, a cutting step to modify the length of one or more artificial lashes, and/or a cutting step to cut the base to a desired length before or after adhering artificial lashes thereto (e.g., cutting the eyelash extension unit at the base to form a plurality of lash segments). Any one or more of these steps may take place at any appropriate point within the methods described herein. Further processing steps may also be included, such as packaging, applying a bridge to the eyelash extension unit, etc. The methods described herein may also include methods of applying the eyelash extension units to a user's natural lashes, such as shown in FIG. 1A.

Turning to FIG. 15A, in one or more embodiments, an artificial lash 1500 is initially straight or substantially straight, has an initial length L1 defined in a longitudinal direction from a first end 1502 thereof to a second end 1504 thereof, and has a width W (or thickness or diameter) defined between an inner surface 1506 and an outer surface 1508 measured in a direction perpendicular to the longitudinal direction. In such embodiments, the straight artificial lash 1500 may be curled by chemical, mechanical, or other method(s), such as described above. For example, in some embodiments, the straight artificial lash 1500 may be treated with a chemical and placed in a mold to imbue a curved shape. In other embodiments, the straight artificial lash 1500 may be heated, steamed, or cold steamed, optionally while secured in a mold, to provide a curled shape. In yet other embodiments, the straight artificial lash 1500 may be mechanically deformed such as by stretching or pressing in a mold. Referring to FIG. 15B, the outer surface 1508 of the curled artificial lash 1500a may have a longer length than the inner surface 1506, thereby providing a curled shape. The degree of curl may be tailored to accommodate a variety of lash looks and artificial lashes within an eyelash extension unit may include artificial lashes with uniform or varying degrees of curl. In some embodiments, as shown in FIG. 16, mechanical deformation may be achieved by pulling the straight artificial lash 1500 across an implement 1510, such as a blade, or said implement 1510 may be pulled across the straight artificial lash 1500, to plastically deform the straight artificial lash 1500 and provide a curled shape. The contact with implement 1510 may act to stretch the outer surface 1508 to a greater degree than the inner surface 1506 (the degree of stretching of the inner surface 1506 may be zero) thereby yielding a curled artificial lash 1500a.

Turning to FIG. 17A and FIG. 17B, a system 1700 for curling artificial lashes 1710 is shown. The system includes a curved mold 1730 about which the artificial lashes 1710 (optionally including a base 1720) may be secured. The mold 1730 may be shaped to accommodate a desired degree of curvature of the artificial lashes 1710. In some embodiments, the mold 1730 is configured to be heated or subjected to steam or cold steam. In such embodiments, the mold 1730 may include a thermally insulated portion for isolating the adhesive between the artificial lashes 1710 and the base 1720 from any heat. In some embodiments, the mold 1730 is configured to be used with a tape or wrapping for securing the artificial lashes 1710 thereto. In some embodiments, the mold 1730 includes a second concave portion configured to accommodate the convex portion shown and sandwich the artificial lashes 1710 therebetween. In some embodiments, the concave and convex portions may be heated. In some embodiments, the concave and convex portions may be pressed together to mechanically deform and curl the artificial lashes 1710. In some embodiments, the mold 1730 includes an internal heater or an external heater. In such embodiments, the mold 1730 may be formed of a thermally conductive material to transfer heat to the artificial lashes 1710. In any embodiment, the mold 1730 may be shaped and configured to prevent any heating of the adhesive between the artificial lashes 1710 and the base 1720.

Turning to FIG. 18A, FIG. 18B, and FIG. 18C, a knotted base 1810 is shown comprising one or more knots 1820 (which may include loops, twists, lashing, or combinations thereof). FIG. 19A depicts the knotted base 1810 having a cluster 1830 of artificial lashes 1832 adhered thereto with a bridge 1840 with a knot 1810 longitudinally spaced from the adhesive 1840. FIG. 19B depicts the cluster 1830 adhered to the knotted base 1810 on the knot 1820. FIG. 19C depicts two clusters 1830, one longitudinally spaced from the knot 1820 and the other adhered to the knotted base 1810 on the knot 1820. FIG. 19D depicts a cluster 1830 longitudinally spaced from two knots 1820 on either side thereof. FIG. 19E depicts a cluster 1830 longitudinally spaced from a knot 1820, the knot 1820 positioned proximate an end 1810b of the knotted base 1810. FIG. 19F depicts two clusters 1830, one longitudinally spaced from the knot 1820 and the other adhered to the knotted base 1810 on the knot 1820, and a further knot 1820 positioned between the two clusters 1830.

Turning to FIG. 20A, an artificial lash 2020 extending from a first end 2020a to a second end 2020b is adhered to a knotted base 2010 via a bridge 2040, wherein the adhesive contacts the artificial lash 2020 at a position between the first end 2020a and the second end 2020b (e.g., a midway point). As shown in FIG. 20B, the artificial lash 2020 is looped about the knotted base 2010 such that the first end 2020a and the second end 2020b are on the same side of the knotted base 2010 with a loop 2020c on an opposite side. This configuration forms a knotted portion 2050.

A partial cross-section of the knotted portion 2050 is shown in FIGS. 20C-20N. As shown in FIG. 20C and FIG. 20D, the adhesive 2040 may be positioned on a front or back side of the knotted base 2010. In FIG. 20E and FIG. 20F, the adhesive 2040 may be positioned on a bottom side or a top side of the knotted base 2010. In FIG. 20G, the adhesive 2040 is positioned about an entire circumference of the knotted base 2010. As shown in FIGS. 20H-20N, the artificial lash 2020 may be crossed or twisted to form a twist 2020d. As shown in FIG. 20H and FIG. 20I, the adhesive 2040 may be positioned on a front or back side of the knotted base 2010. In FIG. 20J and FIG. 20K, the adhesive 2040 may be positioned on a bottom side or a top side of the knotted base 2010. In FIG. 20L, the adhesive 2040 is positioned about an entire circumference of the knotted base 2010. In FIG. 20M, the adhesive 2040 is positioned at the twist 2020d. Additional adhesive may be positioned in contact with the knotted base 2010, as shown in FIG. 20N.

Referring to FIG. 21A, a first artificial lash 2021 extending from a first end 2021a to a second end 2021b, a second artificial lash 2022 extending from a first end 2022a to a second end 2022b, and a third artificial lash 2023 extending from a first end 2023a to a second end 2023b are adhered to a knotted base 2010 via a bridge 2040, wherein the adhesive contacts the artificial lashes 2021-2023 at a position between the first ends 2021a-2023a and the second ends 2021b-2023b (e.g., a midway point). As shown, the artificial lashes 2021-2023 cross one another with an intersecting point at the knotted base 2010. As shown in FIG. 21B, the artificial lashes 2021-2023 are looped about the knotted base 2010 such that the first ends 2021a-2023a and the second ends 2021b-2023b are on the same side of the knotted base 2010 with loops 2021c-2023c on an opposite side. This configuration forms a knotted portion 2050.

Referring to FIG. 21C, a first artificial lash 2021 extending from a first end 2021a to a second end 2021b, a second artificial lash 2022 extending from a first end 2022a to a second end 2022b, and a third artificial lash 2023 extending from a first end 2023a to a second end 2023b are adhered to a knotted base 2010 via a bridge 2040, wherein the adhesive contacts the artificial lashes 2021-2023 at a position between the first ends 2021a-2023a and the second ends 2021b-2023b (e.g., a midway point). As shown, the artificial lashes 2021-2023 do not cross one another and may be substantially parallel. As shown in FIG. 21D, the artificial lashes 2021-2023 are looped about the knotted base 2010 such that the first ends 2021a-2023a and the second ends 2021b-2023b are on the same side of the knotted base 2010 with loops 2021c-2023c on an opposite side. This configuration forms a knotted portion 2050.

Turning to FIG. 22A, a baseless extension unit 2200 is shown. The baseless extension unit 2200 includes a plurality of artificial lashes 2210 adhered to one another and does not include a base. FIG. 22B depicts the baseless extension unit 2200 from a second angle. FIG. 22C depicts a bottom side of the baseless extension unit 2200 including intersections 2220 where a plurality of artificial lashes 2210 cross. The baseless extension unit 2200 includes a bridge 2030 adhering a plurality of artificial lashes 2210 to one another. The adhesive 2230 may be positioned at one or more of the intersections 2220 and/or may be positioned away from the intersections 2220. The adhesive and methods of adhering may be as described above.

Turning to FIG. 23A, a top view of a baseless extension unit 2300 is shown. The baseless extension unit 2300 may include a first artificial lash 2311 extending from a first end 2311a to a second end 2311b, a second artificial lash 2312 extending from a first end 2312a to a second end 2312b, a third artificial lash 2313 extending from a first end 2313a to a second end 2313b, a fourth artificial lash 2314 extending from a first end 2314a to a second end 2314b, a fifth artificial lash 2315 extending from a first end 2315a to a second end 2315b, and a sixth artificial lash 2316 extending from a first end 2316a to a second end 2316b. Each of the artificial lashes 2311-2316 may be a single lash or a plurality of lashes. Although six artificial lashes 2311-2316 are shown, the baseless extension unit 2300 may include any number of artificial lashes.

In FIG. 23A, the first artificial lash 2311 intersects with the fifth artificial lash at an intersection 2320a, the second artificial lash 2312 intersects with the sixth artificial lash at an intersection 2320b, the first artificial lash 2311 intersects with the fourth artificial lash at an intersection 2320c, the second artificial lash 2312 intersects with the fifth artificial lash 2315 at an intersection 2320d, the third artificial lash 2313 intersects with the sixth artificial lash at an intersection 2320e, the second artificial lash 2312 intersects with the fourth artificial lash 2314 at an intersection 2320f, and the third artificial lash 2313 intersects with the fifth artificial lash 2315 at an intersection 2320g. In some embodiments, each artificial lash 2311-2316 may be included in at least one intersection with one or more other artificial lashes 2311-2316. In some embodiments, the artificial lashes 2311-2316 may not intersect at all. In some embodiments, the baseless extension unit 2300 includes at least one intersection 2320a-2320g. In some embodiments, the artificial lashes 2311-2316 form a pattern with an axis of symmetry. In some embodiments, the baseless extension unit 2300 is asymmetrical and does not have an axis of symmetry.

Turning to FIG. 23B, a bottom side of the baseless extension unit 2300 is shown. In some embodiments, as in FIG. 23B, a bridge bonding the artificial lashes 2311-2316 together may not be visible and may be isolated to interstices between the artificial lashes 2311-2316. In some embodiments, as shown in FIG. 23C, a bridge 2330 may be applied to every intersection 2320a-2320g. The adhesive 2330 may be applied between the artificial hairs within the intersection 2320a-2320g and/or applied around an outer perimeter of the intersection 2320a-2320g. In some embodiments, as shown in FIG. 23D and FIG. 23E, the adhesive 2330 may be applied to some, but not all, of the intersections 2320a-2320g. In some embodiments, as shown in FIG. 23F and FIG. 23G, the adhesive 2330 may span more than one intersection 2320a-2320g and may include adhesive 2330 isolated to an intersection 2320a-2320g and adhesive 2330 spanning more than one intersection 2320a-2320g.

In some embodiments, as shown in FIG. 23H and FIG. 23I, the adhesive 2330 may be spaced from the intersections 2320a-2320g. In some embodiments, as shown in FIG. 23J, the adhesive 2330 may be present at one or more intersections 2320a-2320g (or spanning a plurality of intersections 2320a-2320g) and also at a position spaced from the intersections 2320a-2320g.

When the adhesive 2330 is present in more than one position of the baseless extension unit 2300, the respective adhesives 2330 may have the same composition or may be of different compositions. For example, a bridge 2330 isolated to a single intersection 2320a-2320g may have the same composition or a different composition as a bridge 2330 spanning a plurality of intersections 2320a-2320g. In any embodiment, each artificial lash 2311-2316 of the baseless extension unit 2300 is directly adhered to at least one other artificial lash 2311-2316 and directly or indirectly adhered to every other artificial lash 2311-2316. For example, in FIG. 23C, artificial lash 2311 is directly adhered to artificial lashes 2315 and 2314 and indirectly adhered to artificial lash 2312 via its direct adhesion with artificial lash 2314 or 2315, to artificial lash 2333 via its direct adhesion to artificial lash 2315, and to artificial lash 2316 via its direct adhesion to artificial lash 2312 which is directly adhered to artificial lashes 2314 and 2315 or via its direct adhesion to artificial lash 2313 which is directly adhered to artificial lash 2315. In this manner, the baseless extension unit 2300 is a unified structure without the need for a base.

Turning to FIG. 23K, in some embodiments, the baseless extension unit 2300 may include connection 2340 for connecting the artificial lashes 2311-2316 directly or indirectly to each other. Connection 2340 may be a mechanical connection including, but not limited to, lashing, sutures, stitches or stitching, or a seam. Connection 2340 may include a bridge or may be adhesive-free. In some embodiments, the connection 2340 does not include a bridge and the baseless extension unit 2300 does not include a bridge. In such embodiments, the artificial lashes 2311-2316 may be joined solely by the connection 2340 and do not include any heat-fusions or adhered junctions.

Methods of making the baseless extension unit 2300 can include any combination of the methods steps disclosed herein. In some embodiments, the method of making the baseless extension unit 2300 includes adhering or mechanically affixing the artificial lashes 2311-2316 to a temporary base and subsequently removing the temporary base. The temporary base may, e.g., allow for easier application of the adhesive 2330 and/or connection 2340. In some embodiments, the artificial lashes 2311-2316 may be curled with or without heat while attached to the temporary base and prior to application of the adhesive 2330 and/or connection 2340.

Turning to FIG. 24A, an extension unit 2400 is shown having a first cluster 2430a including a plurality of artificial lashes 2431 extending from first ends 2431a to second ends 2431b, wherein the first ends 2431a are attached to a temporary base 2410a via a connection 2440. The connection 2440 may include a bridge, such as those described herein, and/or a mechanical connection such as lashing, knotting, stitching, a clamp or vice, or the like. The extension unit 2400 further includes a second cluster 2430b including a plurality of artificial lashes 2432 extending from first ends 2432a to second ends 2432b, wherein the first ends 2431a are attached to the temporary base 2410a via the connection 2440. In some embodiments, the temporary base 2410a is configured to maintain the first cluster 2430a and second cluster 2430b in a fixed or substantially fixed spatial relationship and/or to maintain the plurality of artificial lashes 2431 and/or 2432 in a fixed or substantially fixed spatial relationship during a treatment. The treatment may include, e.g., heating, pressing, steaming, curling, conditioning, trimming, shaping, or combinations thereof. In some embodiments, a treatment is not conducted while the temporary base 2410a is affixed (e.g., a treatment may be conducted after removal of the temporary base 2410a or no treatment is conducted at any point).

With reference to FIG. 24B, the temporary base 2410a is removed and a permanent connection 2450 is attached to the first cluster 2430a and/or the second cluster 2430b. In some embodiments, removal of the temporary base 2410a may include cutting the artificial lashes 2431, 2432 between the temporary base 2410a and the second ends 2431b, 2432b. In some embodiments, removal of the temporary base 2410a may include reversal or removal of the connections 2440 (e.g., unclamping from a vice or clamp or unsticking from temporary adhesive). In some embodiments, the permanent connection 2450 may include a base attached to the first cluster 2430a and/or the second cluster 2430b by any of the methods described herein. In some embodiments, the permanent connection 2450 does not include a base. In such embodiments, the permanent connection 2450 may be, e.g., a bridge, lashing, sutures, stitches or stitching, a seam, or combinations thereof. In some embodiments, the permanent connection 2450 is attached to the first cluster 2430a and/or the second cluster 2430b at a position away from (or between) the first ends 2431a, 2432a and the second ends 2431b, 2432b.

In some embodiments, the temporary base 2410a may be attached to the first cluster 2430a and/or the second cluster 2430b at a position away from (or between) the first ends 2431a, 2432a and the second ends 2431b, 2432b. In such embodiments, the permanent connection 2450 may be attached to the first cluster 2430a and/or the second cluster 2430b at the first ends 2431a, 2432a or may be attached to the first cluster 2430a and/or the second cluster 2430b at a position away from (or between) the first ends 2431a, 2432a and the second ends 2431b, 2432b. In some embodiments, attaching the permanent connection 2450 away from (or between) the first ends 2431a, 2432a and the second ends 2431b, 2432b may provide addition surface area for attachment of the extension unit 2400 to natural lashes, said surface area including the permanent connection 2450 and the artificial lashes 2431, 2432 between the permanent connection 2450 and the first ends 2431a, 2432a.

Turning to FIG. 25, a baseless extension unit 2500 is shown. The baseless extension unit 2500 may include a plurality of clusters, such as a first cluster 2530a including a first plurality of artificial lashes 2531a and a second cluster 2530b including a second plurality of artificial lashes 2531b. The clusters 2530a/2530b and/or the artificial lashes 2531a/2531b are joined, adhered, connected, secured, or affixed together via a bridge, such as an adhesive bridge 2540. In the embodiment shown, proximal ends of the clusters 2530a/2530b are connected to one surface of the adhesive bridge 2540 or embedded in the adhesive bridge 2540 such that the adhesive bridge 2540 has an exposed surface configured to attached to a user's natural lashes. In some embodiments, the artificial lashes 2531a/2531b are curved or curled in a generally uniform direction and the exposed surface of the adhesive bridge 2540 is on a concave side of the baseless extension unit 2500 such that the baseless extension unit 2500 may be applied to an underside of user's natural upper lashes. The exposed surface of the adhesive bridge 2540 may include an adhesive, such as those described herein, which may be integral with or form a portion of the adhesive bridge 2540 (e.g., one surface of a double-side tape) or may be a secondary adhesive that is pre-applied at manufacture or later applied by a user. In some embodiments, the adhesive bridge 2540 is a double-sided tape having two opposing adhesive surfaces and the clusters 2530a/2530b are adhered or connected to one adhesive surface of the double-sided tape while the opposite adhesive surface is the exposed surface. In some embodiments, the adhesive surfaces of the double-sided tape are identical or substantially identical in form and composition. In some embodiments, the adhesive surfaces of the double-sided tape are different from one another. For example, the double-sided tape may have a stronger adhesive on a first adhesive surface for permanently or semi-permanently affixing the clusters 2530a/2530b thereto and a weaker adhesive on a second adhesive surface for temporarily affixing the baseless extension unit 2500 to a user's natural lashes. In some embodiments, the adhesive on the second adhesive surface may be pliable and capable of embedding or partially embedding a user's natural lashes therein. In some embodiments, the double-sided tape includes a first adhesive on a first adhesive surface having a thickness equal to or less than a thickness of the artificial lashes 2531a/2531b and a second adhesive on a second adhesive surface having a thickness greater than or at least 2× the thickness of the artificial lashes 2531a/2531b. In such embodiments, the artificial lashes 2531a/2531b may be adhered via the first adhesive or the second adhesive and the other of the first adhesive and the second adhesive may be configured to adhere to a user's natural lashes. As shown, in some embodiments, the proximal ends of the first plurality of artificial lashes 2531a of the first cluster 2530a are spaced from and not in contact with the proximal ends of the second plurality of artificial lashed 2531b of the second cluster 2530b.

Turning to FIG. 26, a lash system 2600 is shown including one or more supports 2620 within a housing 2610. Each support 2620 includes a projection 2622 having a convex inclined face 2622a and a bridge strip 2622b along the inclined face 2622a. The adhesive strip 2622b is configured to temporarily adhere to artificial lashes 2632 of extension units 2630 away from a bridge, such as an adhesive bridge 2634, of the extension unit 2630. In some embodiments, the adhesive bridge 2634 includes a tacky exposed surface facing the inclined face 2622a. In some embodiments, the tacky exposed surface of the adhesive bridge 2634 does not include a covering and the system 2600 may be configured to maintain spacing between the exposed surface of the adhesive bridge 2634 and the inclined face 2622a. In some embodiments, the tacky exposed surface of the adhesive bridge 2634 includes a removable release liner. In some embodiments, the exposed surface of the adhesive bridge 2634 is not tacky. In some embodiments, the projection 2622 is a semicircle shape approximating the size and curvature of a natural lash line. In some embodiments, each projection 2622 supports a plurality of extension units 2630 wherein a total width of the plurality of extension units 2630 is about equal to or greater than an average lash line length. In any embodiment, the extension unit 2630 used in the system 2600 may include any of the extension units described herein.

Turning to FIG. 27, a baseless extension unit 2700 is shown including a first cluster 2730a including a first plurality of artificial lashes 2731a and a second cluster 2730b including a second plurality of artificial lashes 2731b adhered to a bridge, such as an adhesive bridge 2740. The baseless extension unit 2700 may include any of the features described above with respect to baseless extension unit 2500. In some embodiments, the exposed surface of the adhesive bridge 2740 is not tacky and the baseless extension unit 2700 is configured to be applied to a user's natural lashes using a secondary adhesive.

With reference to FIG. 28, a baseless extension unit 2800 is shown including artificial lashes 2810 adhered to a bridge, such as an adhesive bridge 2840. The baseless extension unit 2800 may include any of the features described above with respect to baseless extension unit 2500. The baseless extension unit 2800 further includes a plurality of adhesive islands 2850 on the exposed surface of the adhesive bridge 2840, each spaced from one another, and each formed of a bridge such as those described herein. In some embodiments, the exposed surface of the adhesive bridge 2840 is non-tacky between the adhesive islands 2850.

Embodiments disclosed herein as including a base may alternatively employ a bridge such as, for example, an adhesive bridge. Likewise, embodiments disclosed herein as including an adhesive bridge may alternatively employ a base and a bridge to bond the artificial lashes to the base.

In one or more of the embodiments described herein, any of the above-described bridges in any of the above-described embodiments is a non-adhesive bridge that does not include any adhesive. In one or more of the embodiments described herein, the bridge is a non-adhesive bridge that includes a substrate and/or structure but does not include an adhesive. In one or more of the embodiments described herein, the bridge is a non-adhesive bridge that includes a substrate and/or structure but does not include an adhesive, and that connects artificial lashes to form an artificial lash extension unit, the connection being a non-adhesive connection; in several embodiments, such a non-adhesive connection is a joined connection.

In any embodiment described herein, a bridge may be the sole method of bonding or connecting the artificial lashes to the base, wherein heat is not required nor used in any way to achieve the connection. In any embodiment described herein, knotting or lashing may be the sole method of bonding or connecting the artificial lashes to a base, wherein heat is not required nor used in any way to achieve the connection. In any embodiment described herein, a combination of a bridge and knotting or lashing may be the sole method of bonding or connecting the artificial lashes to the base, wherein heat is not required nor used in any way to achieve the connection.

An artificial eyelash extension unit configured to be applied to natural eyelashes for connection thereto has been described herein. The artificial eyelash extension unit includes a plurality of artificial eyelashes and a connection devoid of a separate base. The connection is a bridge, wherein the bridge connects the plurality of artificial eyelashes; and wherein the bridge is configured to be applied to an underside of the natural eyelashes so that the bridge is positioned between: the underside of the natural eyelashes; and the connected plurality of artificial eyelashes. The artificial eyelash extension unit may include one or more of the following features:

• • wherein the connection is a permanent connection;
  • wherein the plurality of artificial eyelashes has a topside and an underside; wherein the bridge connects the plurality of artificial eyelashes so that, when the bridge is applied together with the connected plurality of artificial eyelashes to the underside of the natural eyelashes: the bridge is positioned between the underside of the natural eyelashes and the topside of the connected plurality of artificial eyelashes; and the topside of the connected plurality of artificial eyelashes is positioned between the bridge and the underside of the plurality of artificial eyelashes;
  • wherein the bridge has a topside and an underside; wherein the bridge connects the plurality of artificial eyelashes so that, when the bridge is applied together with the connected plurality of artificial eyelashes to the underside of the natural eyelashes: the topside of the bridge is positioned between the underside of the natural eyelashes and the underside of the bridge; the underside of the bridge is positioned between the topside of the bridge and the topside of the connected plurality of artificial eyelashes; and the topside of the connected plurality of artificial eyelashes is positioned between the underside of the bridge and the underside of the plurality of artificial eyelashes;
  • further comprising an adhesive configured to: be disposed on the topside of the bridge; and connect the bridge, together with the connected plurality of artificial eyelashes, to the underside of the natural eyelashes;
  • wherein the bridge comprises: a first end portion and a second end portion spaced therefrom; and a first edge portion and a second edge portion spaced therefrom; wherein each of the first and second edge portions extends from the first end portion to the second end portion; and wherein the first end portion, the second end portion, the first edge portion, and the second edge portion at least partially define the topside of the bridge;
  • wherein the bridge is an adhesive bridge;
  • wherein the adhesive bridge is an adhesive, and wherein the adhesive is one or more of the following: a tape; an epoxy; a resin; a glue; a pressure-sensitive adhesive (PSA); a double-sided tape;
  • further comprising an adhesive configured to connect the bridge and the connected plurality of artificial eyelashes to the natural eyelashes;
  • wherein the adhesive is pre-applied to the bridge;
  • wherein the bridge comprises one or more of the following: a pressure-sensitive adhesive (PSA); an epoxy; a resin; a glue; a tape; or a double-sided tape;
  • wherein the plurality of artificial eyelashes comprises: a first cluster of artificial eyelashes; and a second cluster of artificial eyelashes spaced from the first cluster of artificial eyelashes; and wherein the first and second clusters have respective topsides which together at least partially form a topside of the plurality of artificial eyelashes;
  • wherein the bridge connects the first and second clusters together by: engaging the topside of the first cluster; engaging the topside of the second cluster; and extending between: the engagement of the bridge with the topside of the first cluster; and the engagement of the bridge with the topside of the second cluster;
  • wherein the bridge has a topside and an underside; wherein the bridge comprises: a first end portion and a second end portion spaced therefrom; and a first edge portion and a second edge portion spaced therefrom; wherein each of the first and second edge portions extends from the first end portion to the second end portion; wherein the first end portion, the second end portion, the first edge portion, and the second edge portion at least partially define the topside of the bridge; wherein the plurality of artificial eyelashes has a topside and an underside; wherein the bridge connects the plurality of artificial eyelashes so that, when the bridge is applied together with the connected plurality of artificial eyelashes to the underside of the natural eyelashes: the topside of the bridge is positioned between the underside of the natural eyelashes and the underside of the bridge; the underside of the bridge is positioned between the topside of the bridge and the topside of the connected plurality of artificial eyelashes; and the topside of the connected plurality of artificial eyelashes is positioned between the underside of the bridge and the underside of the plurality of artificial eyelashes; wherein the plurality of artificial eyelashes comprises: a first cluster of artificial eyelashes; and a second cluster of artificial eyelashes spaced from the first cluster of artificial eyelashes; wherein the first and second clusters have respective topsides which together at least partially form the topside of the plurality of artificial eyelashes; and wherein the bridge connects the first and second clusters together by: engaging the topside of the first cluster; engaging the topside of the second cluster; and extending between: the engagement of the bridge with the topside of the first cluster; and the engagement of the bridge with the topside of the second cluster;
  • wherein the bridge is an adhesive bridge;
  • wherein the adhesive bridge is an adhesive, and wherein the adhesive is one or more of the following: a tape; an epoxy; a resin; a glue; a pressure-sensitive adhesive (PSA); a double-sided tape;
  • further comprising an adhesive configured to: be disposed between the underside of the natural eyelashes and the topside of the bridge; and connect the bridge, together with the connected plurality of artificial eyelashes, to the underside of the natural eyelashes when the bridge is applied, together with the connected plurality of artificial eyelashes, to the underside of the natural eyelashes.

A method of making an artificial eyelash extension unit is provided herein. The method includes: forming a first engagement between a bridge and a first plurality of artificial eyelashes; forming a second engagement between the bridge a second plurality of artificial eyelashes; and extending the bridge between the first engagement and the second engagement to form a connection between the first plurality of artificial eyelashes and the second plurality of artificial eyelashes. The first engagement, the second engagement, and the connection are each devoid of a base. The method may include one or more of the following features:

• • which does not include an application of heat;
  • further comprising curling the first plurality of artificial eyelashes and the second plurality of artificial eyelashes without an application of heat.

A method of making an artificial eyelash extension unit is provided herein. The method includes: using an adhesive, adhering a plurality of artificial lashes to a base and curling the plurality of artificial lashes without applying heat to the adhesive. Curling the plurality of artificial lashes may include one or more of the following: wrapping and securing the plurality of artificial lashes about a curved mold and heating the mold without heating the adhesive, optionally thermally isolating the adhesive and/or physically isolating the adhesive from the heated mold; drawing the plurality of artificial lashes over an implement to plastically deform the plurality of artificial lashes; chemically curling the plurality of artificial lashes. An artificial eyelash extension unit made by the method is provided herein.

A method of making an artificial eyelash extension unit is provided herein. The method includes: using a bridge, adhering a plurality of artificial lashes to a base, fully curing the adhesive without an application of heat, and curling the plurality of artificial lashes without modifying the fully cured adhesive. Curling the plurality of artificial lashes may include one or more of the following: wrapping and securing the plurality of artificial lashes about a curved mold and heating the mold without heating the adhesive, optionally thermally isolating the adhesive and/or physically isolating the adhesive from the heated mold; drawing the plurality of artificial lashes over an implement to plastically deform the plurality of artificial lashes; chemically curling the plurality of artificial lashes. An artificial eyelash extension unit made by the method is provided herein.

A method of making an artificial eyelash extension unit is provided herein. The method includes: using a first adhesive, adhering a plurality of artificial lashes to a temporary base; curling the plurality of artificial lashes; using a second adhesive, adhering a second base to the curled plurality of artificial lashes; and removing the first base by cutting the plurality of artificial lashes at a position between the first base and the second base. Curling the plurality of artificial lashes may include one or more of the following: wrapping and securing the plurality of artificial lashes about a curved mold and heating the mold, optionally thermally isolating the first adhesive and/or physically isolating the first adhesive from the heated mold; drawing the plurality of artificial lashes over an implement to plastically deform the plurality of artificial lashes; chemically curling the plurality of artificial lashes. An artificial eyelash extension unit made by the method is provided herein.

A method of making an artificial eyelash extension unit is provided herein. The method includes: curling a plurality of artificial lashes; and, using a bridge, adhering the curled plurality of artificial lashes to a base. Curling the plurality of artificial lashes may include one or more of the following: wrapping and securing the plurality of artificial lashes about a curved mold and heating the mold; drawing the plurality of artificial lashes over an implement to plastically deform the plurality of artificial lashes; chemically curling the plurality of artificial lashes. An artificial eyelash extension unit made by the method is provided herein.

A method of making a knotted artificial eyelash extension unit is provided herein. The method includes: knotting a first plurality of artificial lashes together to form a first knotted cluster; knotting a second plurality of artificial lashes together to form a second knotted cluster; and attaching the first knotted cluster to the second knotted cluster. Attaching the first knotted cluster to the second knotted cluster may include: using a bridge, adhering the first knotted cluster and the second knotted cluster to a base; embedding the first knotted cluster and the second knotted cluster in a base; knotting a base about the first knotted cluster and/or the second knotted cluster; or forming an adhesive bridge formed of an adhesive between the first knotted cluster and the second knotted cluster. The adhesive may be a tape or a double sided tape. Attaching the first knotted cluster to the second knotted cluster may be concurrent with knotting the first plurality of artificial lashes and/or with knotting the second plurality of artificial lashes, wherein knotting the first plurality of artificial lashes and/or knotting the second plurality of artificial lashes comprises knotting the first and/or second plurality of artificial lashes about a base. The base may be a knotted base, wherein the knotted base may include at least one knot that is: positioned along a length thereof, optionally at a distal or proximal end thereof, positioned between the first knotted cluster and the second knotted cluster; positioned at the first knotted cluster or at the second knotted cluster; or is an attachment formed about first knotted cluster and/or the second knotted cluster. The method may include curling the first plurality of artificial lashes and/or the second plurality of artificial lashes before or after attaching the first knotted cluster to the second knotted cluster. Curling may include one or more of the following: wrapping and securing the plurality of artificial lashes about a curved mold and heating the mold; drawing the plurality of artificial lashes over an implement to plastically deform the plurality of artificial lashes; chemically curling the plurality of artificial lashes. A knotted artificial eyelash extension unit made by the method is provided herein.

A method of making a knotted artificial eyelash extension unit is provided herein. The method includes: knotting a base to form a knotted base and attached a plurality of artificial lashes to the knotted base. Attaching the plurality of artificial lashes to the knotted base may include: using a bridge, adhering the plurality of artificial lashes to the knotted base; embedding the plurality of artificial lashes in the knotted base; or knotting the plurality of artificial lashes about the knotted base, optionally pre-applying a bridge to the knotted base. The adhesive may be a tape or a double sided tape. Attaching the plurality of artificial lashes to the knotted base may be concurrent with knotting the base, wherein knotting the base comprises knotting the base about the plurality of artificial lashes to attached the plurality of artificial lashes to the knotted base, optionally wherein the plurality of artificial lashes comprises a first cluster and a second cluster and knotting the base about the plurality of artificial lashes comprises knotting the base about the first cluster and knotting the base about the second cluster. The first cluster and/or the second cluster may include an attachment selected from a bridge and/or a knot, the attachment configured to secure artificial lashes within the first or second cluster to one another. The knotted base may include at least one knot that is: positioned along a length thereof, optionally at a distal or proximal end thereof, positioned between the first cluster and the second cluster; positioned at the first cluster or at the second cluster; or is an attachment formed about the plurality of artificial lashes or about the first cluster and/or the second cluster. The method may include curling the plurality of artificial lashes before or after attaching the plurality of artificial lashes to the knotted base. Curling may include one or more of the following: wrapping and securing the plurality of artificial lashes about a curved mold and heating the mold; drawing the plurality of artificial lashes over an implement to plastically deform the plurality of artificial lashes; chemically curling the plurality of artificial lashes. A knotted artificial eyelash extension unit made by the method is provided herein.

A knotted artificial eyelash extension unit is provided herein. The knotted artificial eyelash extension unit includes a plurality of artificial lashes secured together and at least one knot. The plurality of artificial lashes may include a first knotted cluster comprising a first knot securing first lashes of the first knotted cluster to one another. The plurality of artificial lashes may include a second knotted cluster comprising a second knot securing second lashes of the second knotted cluster to one another. The first knotted cluster may be attached to the second knotted cluster by: using a bridge, adhering the first knotted cluster and the second knotted cluster to a base; embedding the first knotted cluster and the second knotted cluster in a base; knotting a base about the first knotted cluster and/or the second knotted cluster; forming an adhesive bridge formed of an adhesive between the first knotted cluster and the second knotted cluster; or forming the first knot about a base and forming the second knot about the base. The adhesive may be a tape or a double sided tape. The knotted artificial eyelash extension unit may include a base comprising the at least one knot, optionally wherein the at least one knot is: formed along a length thereof and no in contact with the plurality of artificial lashes; or formed about one or more lashes of the plurality of artificial lashes to attach said one or more lashes to the base.

It is understood that variations may be made in the foregoing without departing from the scope of the disclosure.

In one or more embodiments, the elements and teachings of the various disclosed embodiments may be combined in whole or in part in some or all of the disclosed embodiments. In addition, one or more of the elements and teachings of the various disclosed embodiments may be omitted, at least in part, or combined, at least in part, with one or more of the other elements and teachings of the various disclosed embodiments.

Any spatial references such as, for example, “upper,” “lower,” “above,” “below,” “between,” “bottom,” “vertical,” “horizontal,” “angular,” “upwards,” “downwards,” “side-to-side,” “left-to-right,” “left,” “right,” “right-to-left,” “top-to-bottom,” “bottom-to-top,” “top,” “bottom,” “bottom-up,” “top-down,” etc., are for the purpose of illustration only and do not limit the specific orientation or location of the structure described above. The term “about” as used herein may include the recited values and values within +/−10% thereof.

In one or more embodiments, while different steps, processes, and procedures are described as appearing as distinct acts, one or more of the steps, one or more of the processes, or one or more of the procedures may also be performed in different orders, simultaneously or sequentially.

In one or more embodiments, the steps, processes, or procedures may be merged into one or more steps, processes, or procedures.

In one or more embodiments, one or more of the operational steps in each embodiment may be omitted. Moreover, in some instances, some features of the present disclosure may be employed without a corresponding use of the other features.

Although several embodiments have been disclosed in detail above, the embodiments disclosed are not limiting, and those skilled in the art will readily appreciate that many other modifications, changes, and substitutions are possible in the disclosed embodiments without materially departing from the novel teachings and advantages of the present disclosure. Accordingly, all such modifications, changes, and substitutions are intended to be included within the scope of this disclosure as defined in the following claims. In the claims, any means-plus-function clauses are intended to cover the structures described herein as performing the recited function and not only structural equivalents, but also equivalent structures. Moreover, it is the express intention of the applicant not to invoke 35 U.S.C. § 112(f) for any limitations of any of the claims herein, except for those in which the claim expressly uses the word “means” together with an associated function.