阅读说明：本技术 美容处理方法以及组件 (Cosmetic treatment method and assembly ) 是由 奥田真介 川本诚 亨利·萨曼 让-巴普蒂斯特·勃朗 亚历克西斯·伦纳德 弗兰克·吉隆 卡 于 2017-06-30 设计创作，主要内容包括：用于将纤维添加至天然睫毛的美容处理方法，所述方法包括：a)将粘合剂组合物(A)涂抹至睫毛的至少一部分，b)使由涂抹器(10)承载的纤维(12)与存在于所述睫毛上的所述粘合剂组合物(A)接触，c)将涂抹器(10)从睫毛移开，以使粘附至所述睫毛的纤维(12)脱离。(A cosmetic treatment process for adding fibers to natural eyelashes, the process comprising: a) applying an adhesive composition (a) to at least a portion of eyelashes, b) bringing fibers (12) carried by the applicator (10) into contact with the adhesive composition (a) present on the eyelashes, c) moving the applicator (10) away from the eyelashes to detach fibers (12) adhered to the eyelashes.)

1. A cosmetic treatment process for adding fibers to natural eyelashes, the process comprising:

a) applying an adhesive composition (A) to at least a portion of the eyelashes,

b) contacting the fibres (12) carried by the applicator (10) with the adhesive composition (A) present on the eyelashes,

c) removing the applicator (10) from the eyelashes to detach fibers (12) adhered to the eyelashes.

2. Method according to claim 1, wherein in step a) the adhesive composition (a) is applied to at least a portion of the eyelashes in a continuous or discontinuous manner.

3. Method according to claim 1 or 2, wherein in step a) the adhesive composition (a) is applied to the eyelashes over a length of from about 0.1mm to about 10mm, better still from 0.5mm to 10mm, better still from 1mm to 5mm of the eyelashes, preferably starting from the root of the eyelashes.

4. Method according to any one of the preceding claims, wherein step b) is carried out by bringing fibres (12) into contact with the eyelashes, the fibres (12) being substantially parallel to the eyelashes.

5. Method according to any one of the preceding claims, wherein the eyelashes (F) are aligned by bringing the fibres (12) into contact with an upper row of eyelashes (F)₁) Is contacted to perform step b).

6. Method according to claim 5, wherein said upper row of eyelashes (F) are obtained by bringing fibres (12) into contact with said upper row of eyelashes (F)₁) The same part treated with the adhesive composition is contacted to carry out step b).

7. Method according to claim 5 or 6, wherein said upper row of eyelashes (F) are obtained by bringing fibres (12) into contact with said upper row of eyelashes (F)₁) To carry out step b).

8. The method according to any one of claims 1 to 7, wherein the applicator (10) is brought close to the eyelashes in a tangential movement until the fibers (12) contact the adhesive composition (A).

9. The method according to any one of claims 1 to 8, wherein the fibres (12) are arranged in a fibre bundle on the applicator (10).

10. Method according to any one of the preceding claims, wherein the fibres (12) are substantially parallel to each other on the applicator (10).

11. Method according to any one of claims 1 to 10, wherein the fibres (12) carried by the applicator (10) are not connected to each other except via the applicator.

12. An assembly for adding fibers (12) to natural eyelashes, in particular for implementing a method as defined in any one of the preceding claims, the assembly comprising:

-an adhesive composition (A) to be applied to the eyelashes,

-an applicator (10) holding releasable fibres (12), said applicator bringing said fibres into contact with said adhesive composition applied to the eyelashes, so as to enable the adhesion of said fibres to said composition and the detachment of said fibres.

13. The assembly of claim 12, wherein the applicator (10) holds a mixture of fibers (12) that differ from one another in color.

14. Assembly according to claim 12 or 13, comprising an adhesive applicator (16) for applying the adhesive composition (a) to the eyelashes.

15. The assembly of claim 14, the adhesive applicator (16) including a flocked end piece.

16. Assembly according to any one of claims 12 to 15, wherein the applicator (10) comprises a mechanical system comprising one or more components movable relative to each other, the mechanical system being configured to pass from a fiber-retaining configuration to a fiber-disengaging configuration.

17. Assembly according to claim 16, wherein the mechanical system comprises a spring (30) which clamps the fibre (12) between the coils (31) of the spring.

18. The assembly of claim 17, wherein the spring (30) includes an end (37, 38) attached to a manually operated actuating lever (42, 43).

19. Assembly according to claim 17 or 18, wherein the spring (30) is compressed or released along its longitudinal axis (X), which is the longitudinal axis (X) of the applicator (10), the applicator (10) preferably having a push button (34) and two abutments (35, 36) near the two ends (37, 38) of the spring (30), one abutment (35) being movable along the longitudinal axis (X) and the other abutment (36) being immovable when the push button (34) is actuated.

20. Assembly according to any one of claims 12 to 19, wherein the adhesive composition (a) comprises or consists of an adhesive material selected from pressure sensitive adhesives.

21. Assembly according to any one of claims 12 to 20, wherein the adhesive composition (a) comprises or consists of an adhesive material selected from acrylic polymers or acrylic copolymers.

22. Assembly according to any one of claims 12 to 21, in which the adhesive composition (a) is chosen from those for eyelashes known as marketed by the american international industry

Technical Field

Background

[ Prior Art and objects of the invention ]

Eyelash extensions and false eyelashes are used to enhance the length, thickness, and richness of natural eyelashes.

Several methods of applying eyelash extensions can be performed. The main method is to individually adhere the fibers forming the extension portion to the mascara thread one by one, thereby preventing the fibers from sticking to each other. Eyelash extensions may last about three to four weeks.

False eyelashes are typically designed to be worn for a short period of one or two days. False eyelashes are usually presented as a fiber strip. In order to apply the false eyelashes, the fiber strips are adhered to the root portions of the eyelashes after glue is applied to the bottom portions of the fiber strips or directly to the root portions of the eyelashes.

Application of eyelash extensions requires professional personnel to accomplish it, is very expensive and typically takes one to two hours.

Another disadvantage of eyelash extensions or false eyelashes is that they are not sterile, which can lead to infection.

US2016/0264334 provides a package for at least one eyelash prosthesis wherein contact with the eyelash prosthesis is minimized in order to maintain the quality, appearance and integrity of the eyelash prosthesis.

Disclosure of Invention

There is a need to benefit from a method for cosmetic treatment of eyelashes by adding supplemental fibers to the natural eyelashes that can be performed quickly, easily, and (if possible) on their own.

[ cosmetic treatment method ]

The present invention aims to meet this need and is achieved by a cosmetic treatment process for adding fibers to natural eyelashes, comprising:

a) applying an adhesive composition to at least a portion of the eyelashes,

b) contacting fibers carried by an applicator with the adhesive composition present on the eyelashes,

c) removing the applicator from the eyelashes to detach fibers adhered to the eyelashes.

The method according to the invention makes it possible to produce an eyelash lengthening effect with excellent alignment of the eyelashes and fibers. The method may be implemented in an institution or at home. Many fibers can be applied to the eyelashes in a simple hand gesture in less than, for example, 10 minutes (if not less than 1 minute).

In the present invention, "natural eyelashes" and "eyelashes" are used to designate natural eyelashes.

By "adhesive" composition is meant any material that is resistant to being torn off, whether or not having a durable adhesive strength.

Holding the fibres on the applicator in step b), the fibres being disengageable.

The density of the fibers added to the eyelashes may be adjusted, for example, by providing the applicator with a greater density of fibers or a lesser density of fibers, thereby affecting the density of the fibers after they are transferred to the eyelashes. The density of the fibres on the applicator may be 10 fibres/cm²To 40000 fibres/cm²More preferably 20 fibers/cm²Up to 20000 fibres/cm²More preferably 50 fibers/cm²To 10000 fibres/cm²Still more preferably 75 fibers/cm²To 1000 fibres/cm²In particular 100 fibres/cm²To 500 fibres/cm²For example 150 fibres/cm²To 300 fibres/cm²E.g. about 200 fibres/cm². The density is not necessarily uniform and may vary. The spacing between two adjacent fibres on the applicator (also referred to as the "average distance") measured at the root of the fibres is preferably 10 μmTo 250 μm, in which measurement each fiber preferably has a circular shape, the measured distance is the smallest distance, and the average distance is calculated as the average of all distances.

The adhesive composition may be applied to at least a portion of the eyelashes in step a) in a continuous or discontinuous manner. In step a), the adhesive composition may be applied to the eyelashes over a length of from about 0.1mm to about 10mm, better still from 0.5mm to 10mm, still better still from 1mm to 5mm of the eyelashes, preferably starting from the root of the eyelashes. The length of the fibers coated with the adhesive composition in step a) may be 100% (of the natural length of the eyelashes), better still be 1% to 70% of the natural length of the eyelashes, still better still be 5% to 30% of the natural length of the eyelashes. The adhesive composition may not cover some eyelashes. The length of the eyelashes covered by the adhesive composition may be different for all eyelashes.

Step b) may be performed by contacting the fibers with the eyelashes, the fibers being substantially parallel to the eyelashes. Step b) may be performed by contacting the fibers with the upper or lower portion of the upper row of eyelashes. Preferably, step b) is carried out by contacting the fibers with the same portion of the upper row of eyelashes treated with the adhesive composition. This means that if the adhesive composition is applied to the upper portion of the upper row of eyelashes, the fibers are also preferably in contact with the upper portion of the upper row of eyelashes. If the adhesive composition is applied to the lower portion of the upper row of eyelashes, the fibers are also preferably in contact with the lower portion of the upper row of eyelashes. In a preferred embodiment, step b) is carried out by bringing the fibers into contact with the upper portion of the upper row of eyelashes.

The applicator may be brought into proximity to the eyelashes in a tangential motion until the fibers contact the adhesive composition. This "tangential motion" may also be referred to as "edge wiping motion".

The retention force for holding the fibers on the applicator is advantageously lower than the adhesion force for adhering the fibers to the adhesive composition present on the eyelashes.

The adhesion force for adhering the fibers to the adhesive composition is preferably at least twice the retention force for retaining the fibers on the applicator. This makes it possible to ensure that the fibres are correctly detached from the applicator. The force exerted on the fibres in order to disengage them from the applicator may be less than or equal to 15 mN.

The fibres advantageously have a first end (also called root or root) carried by the applicator and a second end which is a free end.

[ Assembly ]

The invention also relates to an assembly for the cosmetic treatment of natural eyelashes, for adding fibres, in particular to an assembly for implementing the method defined above, said assembly comprising:

-an adhesive composition to be applied to the eyelashes,

-an applicator holding releasable fibers, the applicator bringing the fibers into contact with an adhesive composition applied to the eyelashes, so as to enable the fibers to adhere to the composition and to release the fibers.

In the method and/or assembly according to the invention, the fibres may be positioned on the applicator in various ways, depending on the desired result. The fibers are arranged in a fiber bundle, for example, on an applicator. The fibers may be substantially parallel to each other on the applicator. The fibers may be arranged on the applicator in the shape of at least a portion of the curvature of the false eyelashes. The roots of the fibres may follow a curve in a plane or a curve not in any plane on the applicator.

The fibers may be oriented perpendicular to the support surface of the applicator or at an angle to the normal to the surface, in particular up to 45 °.

When the fibers are carried by the applicator, the fibers are not connected to each other except via the applicator. In this case, the fibers are individual and isolated fibers. They may be neither stripe-shaped nor cluster-shaped.

The fibers may be held on the applicator by bonding or friction or by a mechanical system comprising one or more parts that can move relative to each other, the mechanical system being able to pass from a fiber holding configuration to a fiber disengaging configuration, the force exerted on the fibers being greater in the holding configuration than in the releasing configuration to disengage the fibers from the applicator. The mechanical system comprises, for example, a spring that clamps the fiber between coils of the spring in a holding configuration, the spring being able to be stretched to open the coils and disengage the fiber. The fibers may be held between the coils of the spring, the fibers being substantially perpendicular to the longitudinal axis of the spring. The spring may be manually operated between the retained configuration and the disengaged configuration. The spring may comprise an end attached to a manually operated actuation lever. Alternatively, the spring is compressed or released along its longitudinal axis, which is the longitudinal axis of an applicator having, for example, a button and two abutments near the two ends of the spring, one abutment preferably being movable along the longitudinal axis and the other abutment preferably being immovable when the button is actuated.

The fibers may be retained on the applicator by at least one material whose mechanical strength is reduced by stimulation, the method comprising: subjecting the applicator to said stimulus so as to reduce the force exerted on the fibers to detach them from the applicator, exposure to the stimulus occurring before and/or during contact of the fibers with the adhesive composition present on said eyelashes. This solution is particularly advantageous because it enables the user to use the system without preventive measures, while obtaining the desired makeup result. A second advantage lies in the production up to the place of delivery. The stimulus is, for example, a thermal stimulus, the material then preferably comprising wax, in particular beeswax, candelilla wax or paraffin wax. As a variant, the stimulus is a chemical stimulus and comprises exposing the applicator to a solvent, preferably water, of said material.

The fibers may be placed on the applicator by electrostatic flocking or may be positioned by a mechanical system.

In the course of carrying out the method, the fibres can be completely detached from the applicator. As a variant, the fibers may comprise a bottom portion that remains bound by the applicator at the first end and a detachable portion that is detached. In this case, the fiber may include a predetermined region which is mechanically weakened or sensitive to a stimulus (capable of mechanically weakening the predetermined region), particularly a thermal stimulus or a chemical stimulus, the force applied to cause the detachable portion to detach from the root portion being smaller than the adhesion force for adhering the detachable portion to the adhesive composition. The predetermined area may be located at the same position on the length of the fibre for all fibres. As a variant, this is not the case, and after detachment, the fibers can be given a variable length, which can impart different aesthetic effects to the eyelashes.

The fibers may be held on the applicator by a multiple retention system comprising a first retention system exerting a force for detaching the fibers that is less than the adhesion force for adhering the fibers to the binder composition and a second retention system ensuring, when combined with the first retention system, that the force for retaining the fibers is greater than the adhesion force for adhering the fibers to the binder composition, the second retention system being adjusted to bring the force to be exerted for detaching the fibers to a value that is less than the adhesion force for adhering the fibers to the binder composition during use of the applicator for applying the fibers to the binder composition. The conditioning may include exposing the second retention system to a thermal or chemical stimulus.

The invention also relates to an applicator for an assembly as defined above, the detachable fibres remaining detached from the applicator when a tension equal to 15mN, or even equal to 20mN, is applied to the applicator.

[ fibers ]

According to the invention, the term "fiber" is understood to mean an object having a length L and a diameter D, such that L is greater than D and preferably much greater than D, D being the diameter of the circle in which the cross section of the fiber is inscribed. In particular, the ratio L/D (or aspect ratio) is selected from 3.5 to 2500, preferably from 10 to 1000, better still from 20 to 500.

The fibers that can be used in the present invention can be fibers of synthetic or natural origin, as well as fibers of inorganic or organic origin. The fibers may be short or long, individual or ordered (e.g., braided, hollow, or solid). They may have any shape, e.g. curved or straight. They may in particular have a circular or polygonal (square, hexagonal or octagonal) cross section. In particular, their ends may be blunted and/or smoothed to prevent injury.

In particular, the fibers have a length of 0.5mm to 20 mm.

Their cross-section may be from 20 μm to 150 μm, from 30 μm to 120 μm, even better from 40 μm to 120 μm.

The weight of the fiber or yarn count is usually expressed in denier or dtex and represents the weight (in grams) per 9km of yarn. The fibers according to the invention have a yarn number selected, for example, from 0.1 to 100 deniers, preferably from 1 to 70 deniers, still better from 5 to 60 deniers.

The fibers may be those used for the manufacture of textiles and are in particular silk fibers, cotton fibers, wool fibers, flax fibers, cellulose fibers (in particular fibers extracted in particular from wood, from vegetables or from algae), rayon fibers, polyamides

Fibres, viscose fibres, acetate fibres (in particular rayon acetate fibres), acrylic polymer fibres (in particular polymethyl methacrylate fibres or poly (2-hydroxyethyl methacrylate) fibres), polyolefin fibres (in particular polyethylene fibres or polypropylene fibres), polyethylene terephthalate (PET) fibres, polybutylene terephthalate (PBT) fibres, glass fibres, silica fibres, carbon fibres (in particular carbon fibres in graphite form), polytetrafluoroethylene (such as for example polytetrafluoroethylene (ptfe)), and the like) Fibers, insoluble collagen fibers, polyester fibers, polyvinyl chloride fibers or polyvinylidene chloride fibers, polyvinyl alcohol fibers, polyacrylonitrile fibers, chitosan fibers, polyurethane fibers, polyethylene phthalate fibers, or fibers formed from mixtures of polymers such as those described above (e.g., polyamide/polyester fibers).

The fibers may be human hair.

In addition, the fibers may optionally be surface treated, optionally coated with a protective layer or with a layer intended to impart their color.

Flame retardant acrylic fibers under the brand name "Kanekalon" may be utilized.

The fibers are, for example, the fibers sold under the reference Minke-tips SKINTEX Flock ref.590502.

The same fibers may be used, or as a variant, mixtures of fibers of different lengths, cross-sections, materials, shapes and/or cross-sections from one another may be used. The use of different length fibers may impart greater naturalness. Therefore, the fibers may be of mixed colors. In a particular embodiment, the applicator of the assembly holds a mixture of fibres that differ from each other in colour. The colors of the fibers may be mixed in an ordered manner or randomly. Different colors or associations of colors in the fibers may be achieved without departing from the scope of the invention. Fibers that produce special effects, such as clear fibers, shiny fibers, may also be included. This can create a new aesthetic effect on the eyelashes.

[ adhesive composition ]

The adhesive composition according to the invention is suitable for application to eyelashes and eyelids and for cosmetic use.

The adhesive composition comprises or consists of an adhesive material.

For the purposes of the present invention, the term "material" refers to a polymer or a polymer system that may include one or more polymers having different properties. The binder material may be in the form of a polymer solution or a dispersion of polymer particles in a solvent. In addition, the adhesive material may contain a plasticizer. The adhesive material must have a certain viscosity defined by its viscoelasticity.

The Adhesive material according to the invention may for example be selected from Pressure Sensitive adhesives such as those cited in the "Pressure Sensitive Adhesive technical manual" third edition of d.satas.

The binder material may be selected from acrylic polymers or acrylic copolymers.

The pressure sensitive adhesive material may be selected from acrylic polymers (in particular copolymers of acrylates and methacrylates), rubber-based pressure sensitive adhesives or pressure sensitive adhesives based on styrene copolymers (e.g. styrene-isoprene-styrene (SIS) copolymers and styrene-butadiene-styrene (SBS) copolymers).

The pressure sensitive adhesive material may also be a urethane polymer, polyurethane, silicone (such as Bio-PSA), ethylene/vinyl acetate polymer, styrene or natural rubber based block copolymer, chloroprene, butadiene, isoprene, neoprene, and the like.

As non-limiting examples of the rubber polymer-based pressure-sensitive adhesive, mention may be made in particular of natural rubber (poly (cis-1, 4-isoprene)), methyl methacrylate-isoprene graft copolymer, styrene-butadiene copolymer, butyl rubber, acrylonitrile-butadiene rubber, styrene-isoprene block copolymer, polybutadiene, ethylene-butylene block copolymer and polychloroprene.

Among the pressure-sensitive adhesives comprising polar acrylic polymers, mention may be made of block or statistical copolymers based on acrylic acid, alkyl acrylates and alkyl methacrylates, and also of copolymers of these acrylic polymers with ethylene and vinyl acetate.

Examples of suitable acrylic copolymers are the copolymers marketed under the brands EASTAREZ 2010, EASTAREZ 2020 and EASTAREZ2050 (Eastman Chemical Co.), ACRONAL V210 (BASF)), MOWILITH LDM 7255, REVACRYL 491 (Clariant), and FLEXBOND 165 (air products). As a preferred example of the acrylic copolymer, an acrylic ester/ethylhexyl acrylate copolymer commercially available from Daito KASEI KOGYO under the name Dainosol 5500GM may be used.

The adhesive composition may, for example, be chosen from those marketed by the American International industries for eyelashes known as

And Daitosol 5500GM from Daitosol chemical Co., Ltd.

Commercial examples of suitable polymer rubbers are known under the brands RICON 130 polybutadiene (atofinasca) and ISOLENE 40 polyisoprene (Elementis).

Examples of suitable polyurethane-based adhesives are available under the brands SANCURE 2104(Nov eon) and VYLONER 1400 (Toyobo Vylon).

Examples of suitable vinyl acetate copolymers are commercially available under the brands PVP/VA6-630 (International Specialty Products) and FLEXBOND 149 (air Products).

Examples of vinyl alcohol/vinyl acetate copolymers are commercially available under the brands CELVOL 107 (Celanese) and ELVANOL 50-42 (DuPont).

Mention may also be made of block or statistical copolymers comprising at least one monomer or combination of monomers giving polymers having a glass transition temperature lower than ambient temperature (25 ℃), these monomers or combination of monomers being chosen from butadiene, ethylene, propylene, isoprene, isobutylene, silicones and mixtures thereof. Examples of these materials are block polymers of the styrene-butadiene-styrene, styrene- (ethylene-butylene) -styrene or styrene-isoprene-styrene type (such as those sold under the trade name "Kraton" from Kraton (Kraton) or under the trade name "Vector" from DexcoPlomyers).

The adhesive material according to the present invention may further include a tackifying resin (e.g., rosin or rosin derivatives such as hydrogenated rosin, rosin ester, hydrogenated rosin ester), terpene, aliphatic hydrocarbon-based resin or aromatic hydrocarbon-based resin, phenol resin, styrene resin, and cumarone-indene resin. Mention will also be made of compounds such as shellac, sandarac gum (sandarac gum), dammar resin, elemi gum, copal resin, benzoin and mastic (gum mastic).

Mention may also be made of silicone resins which are crosslinked polyorganosiloxane polymers.

The nomenclature of silicone resins is known under the name "MDTQ", which resin is described in terms of the various siloxane monomer units involved, each letter M, D, T and Q characterizing one type of unit.

Among these resins, mention may in particular be made of siloxane-based silicate resins (which may be of formula [ (CH)₃)₃XSiXO]_xX(SiO_4/2)_yTrimethylsiloxyalkyl silicate of (MQ units), where x and y are integers from 50 to 80), a lipid dispersible film forming polymer in the form of a non-aqueous dispersion of polymer particles (also known as NAD).

As non-aqueous dispersions of hydrophobic film-forming polymers, it is possible to use dispersions of particles of grafted ethylenic polymer (preferably acrylic polymer) in a liquid oil phase, for example in the form of surface-stabilized particles dispersed in a liquid fatty phase.

Dispersions of surface-stabilized polymer particles can be produced as described in document WO 04/055081.

Mention may also be made of (meth) acrylic acid C₁-C₄A dispersion of alkyl ester polymer particles; stabilized by stabilizers selected from isobornyl (meth) acrylate polymers as described in document WO 2015/091513.

UV reactive adhesives may also be utilized.

In the examples, a Pros-Aide (acrylic latex) foam Blend 331 adhesive or an AQ1350Eastman Chemical (sulfopolyester soluble polymer) adhesive was utilized.

[ application of adhesive composition ]

The adhesive composition can be applied to the eyelashes as a continuous film, particularly when the fiber density on the applicator is not too high.

As a variation, the adhesive composition is applied by forming non-adhesive areas between the adhesive areas, which provides control over the density and distribution of the fibers that remain attached to the eyelashes.

An applicator for transferring the adhesive composition may be used. In particular, the assembly according to the invention may comprise an adhesive applicator for applying an adhesive composition to the eyelashes. In this case, the adhesive applicator includes an end piece, such as flocked. The adhesive applicator may have a shape that conforms to the shape of the base of the eyelashes. In this particular case, the gesture is simple, as it is only necessary to bring the adhesive applicator close to the row of eyelashes, and then allow contact to deposit the adhesive on the roots of the eyelashes. The adhesive applicator may also comprise, for example, a pen dispensing the adhesive composition, or an applicator cooperating with a container containing the adhesive composition, such as an applicator provided with a fine brush or a flocked thermoplastic tip.

Drawings

Detailed Description

[ detailed description of embodiments ]

As shown in fig. 2, the method according to the invention is carried out with the aid of an assembly 5 (also called "kit") according to the invention.

The assembly 5 comprises an adhesive composition a contained within a container 13 and an applicator 10, the applicator 10 comprising a gripping portion 11 and fibres 12, the fibres 12 being retained on the applicator 10 at a first end 25.

The adhesive composition A may, for example, be chosen from those marketed by the American International industry under the name "adhesive composition A

Or an acrylate/ethylhexyl acrylate copolymer designated as Dainosol 5500GM commercially available from Dadonghai chemical industries. Additional convenient adhesive compositions may also be used.

The container 13 includes a threaded neck 21 and a cap 15 for closing the container by mating with the threaded neck 21, the cap 15 supporting an adhesive applicator 16. The adhesive applicator 16 comprises a shaft 17 and an application element 18 at the free end. In this embodiment, the wiping element 19 is fitted to the inside of the neck 21. The application element 18 may be a flocked support. Before the application element 18 is passed over the wiping element 19 for the first step 1 of the method, the application element 18 is loaded with the adhesive composition a in the container 13.

The applicator 10 comprises a grip 11, the grip 11 may have other shapes than those shown. The fiber 12 has a first end 25 (or root) and a second free end 26, the first end 25 (or root) being joined to the applicator 10 on a support surface 30 of the applicator 10.

An elastomeric layer having a thickness of 0.050mm, known as SILFLO elastomer marketed by MONADERM under the designation GOSILFLO, is applied to the support of the applicator. Prior to reticulation of the elastomer, the fibers are flocked on the support by an electrostatic flocking process, which is carried out by a manual flocking device (for example, a Microflocker from Campbell Coutts ltdccompany). The fibers are trapped in the elastomer by friction.

As shown in fig. 2, the fibers 12 are not connected to each other except via the applicator 10. The fibers 12 are individually isolated. Fibers of the same nature, diameter, length, shape, or color, or fibers of different nature, length, diameter, shape, and/or color, may be used for the same eyelashes. The shape of the support surface 30 may be planar or non-planar. In this embodiment, the fibers 12 are locally oriented perpendicular to the support surface 30 carrying the fibers 12.

The density of the fibers is about 200 fibers/cm²。

The average distance D or spacing between two adjacent fibers 12 on the applicator 10, measured at the roots of the fibers 12, is preferably 10 to 250 μm. The measurement of this distance is shown in fig. 5. As shown in cross-section, each fiber 12 in this measurement has a circular shape. The measured distance between two adjacent fibers 12 is the minimum distance, in this embodiment a, b and c, respectively, as shown. The average distance D is calculated as the average of all distances, i.e. D ═ Σ D/n, where Σ D is the sum of the individual distances and n is the number of fibers. In this embodiment, Σ d is a + b + c and n is 3.

The assembly 5 may be supplied to the user in the same package (e.g., box, blister, box or sachet). In one variation, the applicator 10 and the container 13 are supplied separately to the consumer.

As shown in fig. 1, the method for adding fibers 12 to natural eyelashes of a human according to the present invention has at least the following three sequential steps.

The implementation of the first step 1 comprises applying the adhesive composition a to at least one portion of the eyelashes, preferably in the vicinity of the root of the eyelashes. In one embodiment, the treatment involves only a portion of the eyelashes, such as a portion of the upper row of eyelashes or all of the eyelashes. The first step 1 is shown in fig. 4A. The tip of the applicator element 18 loaded with adhesive composition a is in contact with the first few millimetres of the upper part of the upper row of eyelashes E, on the root of the eyelashes. Thus, as shown in fig. 4A and 4B, the adhesive composition a is applied only on the first several millimeters of eyelashes from the root of the eyelashes, for example, on the first 4mm of eyelashes from the root of the eyelashes.

In a second step 2, the fibers 12 carried by the applicator 10 are brought into contact with the binder composition a. This second step 2 is shown in fig. 4B. When the applicator 10 is in contact with eyelashes coated with adhesive composition A, the second free ends 26 of the fibers 12 are in contact with the adhesive composition A, as shown in FIG. 4B. The applicator 10 is arranged so that the fibers 12 can be brought into contact with the eyelashes E on which the adhesive composition a has been deposited.

The user manipulates the applicator 10 by grasping the grip 11 and brings the second free end 26 into contact with the adhesive composition a coated portion of the eyelashes E. The applicator 10 is preferably approached by a substantially tangential motion (i.e., a wiping edge gesture) as shown by the arrow in fig. 4B until the fibers 12 come into contact with the adhesive composition a adhered to the eyelashes. This position may be maintained for a few seconds to a few minutes until some of the fibers 12 carried by the applicator 10 adhere to the eyelashes E.

Since the retention force for holding the fibres 12 on the applicator 10 is lower than the adhesion force for adhering the fibres to the adhesive composition a present on the eyelashes E, the detachment of the fibres adhered to the eyelashes is allowed by the user removing the applicator 10 from the eyelashes in the third step 3. This third step 3 is illustrated by fig. 4C. In this embodiment, some of the fibers 12 remain on the support surface 30 of the applicator 10. The other fibres 12 adhering to the upper row F of eyelashes E₁. Since the adhesive composition a is applied only over the first few millimeters of the eyelashes E, only a portion of the fibers 12 (including the second ends 26 thereof) adhere to the eyelashes.

It should be noted that the method according to the invention can be implemented at least partially when the eye in which the eyelashes are to be treated is closed.

The result is shown in fig. 3, in which the upper row of eyelashes F on the left₁With additional fibres 12, while in the other rows of eyelashes, in particular the upper row of eyelashes F on the right₂(comparative) there were no additional fibers. As shown, the resulting effect appears very natural. The fibres 12 being parallel to the upper row of eyelashes F₁The inner eyelashes are positioned. The length of the fibers 12 after deposition on the eyelashes is, for example, 0.5mm to 20 mm.

The invention is not limited to the embodiments shown.

In particular, as a variant, the container 13 comprising the adhesive composition a may be any container, such as a tube, a bottle, a pressurized container, a coated support, a pressed-pump bottle or a pressed-pump tank, this list not being limiting.

The fibers 12 may form an angle with the normal to the support surface 30, which may be up to 45 °.

The fibers may be held on the applicator 10 in various ways, for example by means of a mechanical system such as a spring, which may change configuration in order to disengage the fibers.

Such an applicator 10 is shown in fig. 6 to 8.

In this embodiment, the applicator 10 has the shape of a pen and comprises a spring 30, which spring 30 extends along the longitudinal axis X of the applicator 10 at the end 40 of the applicator 10. The spring 30 has two configurations, a retaining configuration shown in fig. 7 and a disengaging configuration shown in fig. 8. In the retaining configuration, the fiber 12 is retained between the coils 31 of the spring 30 at the first end 25, the fiber 12 being locally substantially perpendicular to the longitudinal axis X of the spring 30. The spring 30 is manually operated between the retained and disengaged configurations by actuating the button 34 at the other end 41 of the applicator 10. In this embodiment, the applicator 10 has, respectively, a seat 35 near an end 37 of the spring 30 and a seat 36 near an end 38 of the spring 30, one seat 35 being movable along the longitudinal axis X and the other seat 36 being immovable (i.e. fixed with respect to the body of the applicator) when the button 34 is actuated.

Another embodiment of the applicator 10 has been shown in fig. 9-12.

In this embodiment, the spring 30 is substantially perpendicular to the longitudinal axis X of the applicator 10. The spring 30 comprises two ends 37 and 38, the end 37 being attached to the actuating rod 42, more precisely to the end of the actuating rod 42, and the end 38 being attached to the actuating rod 43, more precisely to the end of the actuating rod 43, respectively. Actuating lever 42 and actuating lever 43 are manually operated between the retaining configuration shown in fig. 10 (without fiber) and the retaining configuration shown in fig. 12 (with fiber 12) and the disengaging configuration shown in fig. 11 (without fiber).

The invention is not limited to a particular system for holding the fibers on the applicator 10, and in addition to springs, systems sensitive to stimuli (such as thermal or chemical stimuli) may be used, which make it possible to vary the attachment force with which the fibers are attached to the applicator. It is also possible to use components such as discs or sheets which grip the fibres when stacked and compressed.

The fibres may also be held on the applicator by means of a material into which the fibres are implanted when the material is in a fluid state.

There are different colored fibers 12 held by the applicator in an orderly or random manner to apply to the same row of eyelashes.