Skin Firming Composition, Sun Care Film, and Method to Improve Skin Appearance

Abstract

The description refers to compositions, films, and methods for improving the appearance of the skin. The compositions comprise at least one thermoplastic elastomer, at least one adhesive polymer, and at least one filler. The methods comprise applying the compositions to the skin to tighten the skin or conceal skin imperfections by forming a film on the skin.

Description

[001] The description refers to the compositions and methods for improving the appearance of the skin. FUNDAMENTALS

[002] The skin is primarily comprised of two layers. The outer layer or epidermis has a depth of approximately 100 µm. The inner layer or dermis has a depth of approximately 3000 µm from the outer surface of the skin and is comprised of a network of fibrous proteins known as collagen, which provides firmness to the skin, and elastin, which provides elasticity and recovery to the skin. As a person ages, their skin produces less collagen and elastin each year. As a result, the skin becomes thinner and more fragile with age, and the formation of wrinkles as a result of aging is inevitable.

[003] Furthermore, as a person ages, other skin imperfections may appear or become more visible. For example, age spots, which are brown or gray sun-induced skin lesions, may appear on sun-exposed skin as a person ages. It is common for consumers to wish to improve the appearance of such age-related skin imperfections such as wrinkles, crow's feet, age spots, dark circles, and the like. Additionally, many consumers wish to improve the appearance of, or conceal, other skin imperfections such as acne, scars, enlarged pores, and so on, which may be related to aging.

[004] While topical cosmetic formulations, such as foundation or concealer types of makeup, can improve the appearance of some skin imperfections, such formulations are not long-lasting and cannot Petition 870170053980, dated 07 / 28 / 2017, page 8 / 56 / 41 to reduce the appearance of more pronounced skin imperfections, such as wrinkles or deep scars. Furthermore, while some cosmetic formulations may include an ingredient to reduce the appearance of imperfections over time, such as an anti-wrinkle cream, such formulations may take a long time for results to become visible and may also be ineffective in reducing the appearance of more pronounced skin imperfections.

[005] As an alternative to topical cosmetic formulations, more invasive techniques such as surgery, fillers, or laser skin rejuvenation can provide long-lasting effects and can treat prominent imperfections. However, many consumers cannot afford, or do not wish to undergo, such drastic cosmetic treatments.

[006] As such, there is a consumer desire for topical cosmetic formulations that are effective in reducing the appearance of skin imperfections. SUMMARY

[007] The description refers to the compositions and methods for improving the appearance of the skin.

[008] In one embodiment, the description refers to compositions for stiffening the skin, said compositions comprising (a) at least amorphous styrene hydrocarbon block polymer and hydrocarbon monomers containing from 2 to 5 carbon atoms and comprising one or two ethylenic unsaturations and having a first Tg below 0°C and a second Tg greater than about 25°C; (b) at least one adhesive film-forming polymer selected from C1-C4 alkyl (methacrylate) polymer particles, stabilized in a non-aqueous dispersion and (c) at least one filler.

[009] In other embodiments, the description refers to a skin stiffening film comprising (a) at least one copolymer of Petition 870170053980, dated 07 / 28 / 2017, page 9 / 56 / 41 amorphous styrene hydrocarbon block and hydrocarbon monomers containing 2 to 5 carbon atoms and comprising one or two ethylenic unsaturations and having a first Tg below about 0°C and a second Tg greater than about 25°C; (b) at least one adhesive film-forming polymer selected from C1-C4 alkyl (methacrylate) polymer particles, stabilized in a non-aqueous dispersion and (c) at least one filler; wherein the film has a Young's modulus greater than about 500 kPa.

[0010] In other embodiments, the description refers to methods for improving the appearance of the skin, said methods comprising forming a film by applying a composition to the skin, said composition comprising (a) at least one amorphous hydrocarbon block copolymer of styrene and hydrocarbon monomers containing 2 to 5 carbon atoms comprising one or two ethylenic unsaturations and having a first Tg below about 0°C and a second Tg greater than about 25°C; (b) at least one adhesive film-forming polymer selected from C1-C4 alkyl methacrylate polymer particles, stabilized in a non-aqueous dispersion; and (c) at least one filler; wherein the film has a Young's modulus greater than about 500 kPa. DETAILED DESCRIPTION

[0011] In several embodiments, the description refers to compositions for improving the appearance of the skin. According to several embodiments, the description refers to compositions comprising at least one thermoplastic elastomer, at least one adhesive polymer and at least one filler.

[0012] The compositions can be effective in reducing the appearance of skin imperfections. In several modalities, the compositions can improve the appearance of the skin by forming a film on the skin having a Young's Modulus higher than that of the skin and in this way Petition 870170053980, dated 07 / 28 / 2017, p. 10 / 56 / 41 having the ability to tighten the skin. Additionally, in some embodiments, the film may obscure or conceal skin imperfections. Consequently, the description still refers to methods of improving the appearance of the skin by forming a film on the skin with the compositions described herein.

[0013] As used herein, the term “long lasting” means that the film lasts at least about 6 hours, such as at least about 12 hours, at least about 24 hours, at least about 48 hours or at least about 72 hours, after the film has formed on the skin.

[0014] As used herein, the term “duration” means that the film is substantially intact at the site on the skin.

[0015] As used herein, the term “forms quickly” means that the film forms within less than about 20 minutes, such as less than about 15 minutes or less than about 10 minutes, after the composition is applied to the skin.

[0016] As used herein, the term “obscure” with respect to skin imperfections means that the visual appearance of the imperfection is less visible.

[0017] As used herein, the term “tighten” means that the film contracts in a way that makes the skin feel tighter to the user and reduces the visual appearance of wrinkles on the skin.

[0018] As used herein, the term “soft focus” means that the visual appearance of the skin is more homogeneous and matte, leading to the obscuring or concealing of skin imperfections.

[0019] As used herein, “durable” means that the film will not come off easily, or be removed by sweat, water, makeup, lotions or the like, such that the film will remain substantially intact until removed by the user. Compositions Petition 870170053980, dated 07 / 28 / 2017, page 11 / 56 / 41

[0020] According to various embodiments, the compositions comprise at least one thermoplastic elastomer, at least one adhesive polymer and at least one filler, which together form an association in the composition. Optional additional components, such as solvents, silicone elastomers, humectants, water and pigments, may also be included in the compositions. Thermoplastic Elastomer

[0021] According to various embodiments, at least one thermoplastic elastomer is chosen from amorphous hydrocarbon block copolymers of styrene and hydrocarbon monomers containing 2 to 5 carbon atoms and comprising one or two ethylenic unsaturations and having at least two glass transition temperatures (“Tg”). The block copolymers may be soluble or dispersible in hydrocarbon in the oil phase.

[0022] Non-limiting examples of unsaturated hydrocarbon monomers having from 2 to 5 unsaturated carbon atoms include ethylene, propylene, butadiene, isoprene or pentadiene. In several exemplary and non-limiting embodiments, block copolymers may be chosen from those comprising at least one styrene block and at least one block comprising units selected from butadiene, ethylene, propylene, butylene, isoprene or mixtures thereof. The hydrocarbon-based block copolymer may be, for example, an optionally hydrogenated copolymer comprising styrene blocks and C3-C4 ethylene / alkylene blocks or isoprene blocks.

[0023] Amorphous hydrocarbon block copolymers comprise at least one first block whose Tg is below about 20°C, such as below about 0°C, below about -20°C or below about -40°C. The Tg of the first block may, for example, vary from about -150°C to about 20°C, such as from about -100°C to about 0°C. The Petition 870170053980, dated 28 / 07 / 2017, p. 12 / 56 / 41 Block copolymers also comprise at least a second block whose Tg is greater than about 25°C, such as greater than about 50°C, greater than about 75°C, greater than about 100°C or greater than about 150°C. The Tg of the second block may, for example, vary from about 25°C to about 150°C, such as from about 50°C to about 125°C, from about 60°C to about 120°C or from about 70°C to about 100°C.

[0024] Exemplary non-limiting amorphous diblock copolymers may be selected from styrene-ethylene / propylene copolymers, styrene-ethylene / butadiene copolymers, styrene-ethylene / butylene copolymers, styrene-butadiene or styrene-isoprene copolymers. Diblock copolymers are sold, for example, under the name Kraton® G1701E from Kraton Polymers.

[0025] Non-limiting exemplary triblock amorphous copolymers may be selected from styrene-ethylene / propylene-styrene copolymers, styrene-ethylene / butadiene-styrene copolymers, styreneisoprene-styrene copolymers and styrene-butadiene-styrene copolymers, such as those sold under the names Kraton® G1650, Kraton® D1101, Kraton® D1102, Kraton® D1160 from Kraton Polymers. In an exemplary embodiment, the thermoplastic elastomer may be a mixture of a styrene-butylene triblock copolymer / ethylene-styrene diblock copolymer and a styrene-ethylene / butylene copolymer, such as those sold under the name Kraton® G1657M from Kraton Polymers.

[0026] The thermoplastic elastomer may be present in the composition in an amount up to about 25%, such as an amount ranging from about 5% to about 20%, from about 6% to about 18%, from about 7% to about 16%, from about 8% to about 15%, from about 9% to about 14% by weight, relative to the weight of the composition. Adhesive Polymer

[0027] Compositions according to another description comprise Petition 870170053980, dated 07 / 28 / 2017, p. 13 / 56 / 41 at least one adhesive film-forming polymer selected from C1-C4 alkyl (methacrylate) polymer particles, stabilized in a non-aqueous dispersion, referred to herein for ease of reference as an “oily dispersion”, as described in WO2015 / 091513 which is incorporated by reference herein.

[0028] By way of example, the C1-C4 alkyl (meth)acrylate monomers may be chosen from methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate and tert-butyl (meth)acrylate. For example, the polymer may be a methyl acrylate and / or ethyl acrylate polymer.

[0029] The polymer may also comprise an ethylenically unsaturated acid monomer or anhydride thereof, specially chosen from ethylenically unsaturated acid monomers comprising at least one carboxylic, phosphoric or sulfonic acid function, such as crotonic acid, itaconic acid, fumaric acid, maleic acid, maleic anhydride, styrene sulfonic acid, vinylbenzoic acid, vinylphosphoric acid, acrylic acid, methacrylic acid, acrylamidopropanesulfonic acid or acrylamidoglycolic acid and salts thereof. For example, the ethylenically unsaturated acid monomer may be chosen from (meth)acrylic acid, maleic acid and maleic anhydride.

[0030] The salts may be chosen from alkali metal salts, for example, sodium or potassium; alkaline earth metal salts, for example, calcium, magnesium or strontium; metallic salts, for example, zinc, aluminum, manganese or copper; ammonium salts of the formula NH+; quaternary ammonium salts; organic amine salts, for example, methylamine, dimethylamine, trimethylamine, triethylamine, ethylamine, 2-hydroxyethylamine, bis(2-hydroxyethyl)amine or tris(2-hydroxyethyl)amine salts; lysine or arginine salts.

[0031] The polymer of the oily dispersion particles in this manner may also comprise or consist essentially of about 80% to Petition 870170053980, dated 07 / 28 / 2017, p. 14 / 56 / 41 approximately 100%, by weight, of C1-C4 alkyl (meth)acrylate and approximately 0% to approximately 20%, by weight, of ethylenically unsaturated acid monomer, relative to the total weight of the polymer. According to an exemplary embodiment, the polymer essentially consists of a polymer of one or more C1-C4 alkyl (meth)acrylate monomers. According to another exemplary embodiment, the polymer essentially consists of a copolymer of C1-C4 alkyl (meth)acrylate and (meth)acrylic acid or maleic anhydride.

[0032] By way of non-limiting example only, the polymer of the particles in the oily dispersion, which may optionally be crosslinked or, alternatively, may be non-crosslinked, may be chosen from methyl acrylate homopolymers, ethyl acrylate homopolymers, methyl acrylate / ethyl acrylate copolymers, methyl acrylate / ethyl acrylate / acrylic acid copolymers, methyl acrylate / ethyl acrylate / maleic anhydride copolymers, methyl acrylate / acrylic acid copolymers, ethyl acrylate / acrylic acid copolymers, methyl acrylate / maleic anhydride copolymers and ethyl acrylate / maleic anhydride copolymers.

[0033] The polymer particles in the dispersion may have a number average molecular weight ranging from about 2,000 to about 10,000,000, for example, ranging from about 150,000 to about 500,000. The polymer particles may be present in the oily dispersion in a content ranging from about 20% to about 60%, for example, from about 21% to about 58.5%, from about 30% to about 50%, from about 35% to about 45% or from about 36% to about 42%, by weight, relative to the total weight of the oily dispersion.

[0034] The stabilizer in the oil dispersion may be an isobornyl (meth)acrylate polymer selected from isobornyl (meth)acrylate homopolymer and statistical copolymers of isobornyl (meth)acrylate and C1-C4 alkyl (meth)acrylate present in a weight ratio of Petition 870170053980, dated 28 / 07 / 2017, p. 15 / 56 / 41 isobornyl (meth)acrylate / C1-C4 alkyl (meth)acrylate greater than about 4, for example, greater than about 4.5 or greater than about 5. For example, the weight ratio may vary from about 4.5 to about 19, such as from about 5 to about 19 or from about 5 to about 12.

[0035] By way of example only, the stabilizer may be chosen from isobornyl acrylate homopolymers, isobornyl acrylate / methyl acrylate statistical copolymers, isobornyl acrylate / methyl acrylate / ethyl acrylate statistical copolymers and isobornyl methacrylate / methyl acrylate statistical copolymers.

[0036] In various embodiments, the stabilizer may have a number average molecular weight ranging from about 10,000 to about 400,000, as well as from about 20,000 to about 200,000.

[0037] In various embodiments, the combination of stabilizer + particle polymers present in the oily dispersion comprises from about 10% to about 50%, such as from about 15% to about 30%, by weight of polymerized isobornyl (meth)acrylate and from about 50% to about 90%, such as from about 70% to about 85%, by weight of polymerized C1-C4 alkyl (meth)acrylate, relative to the total weight of the stabilizer + particle polymer combination.

[0038] The oily medium of the oily dispersion comprises a hydrocarbon-based oil. The hydrocarbon-based oil is an oil that is liquid at room temperature (25°C). The term hydrocarbon-based oil means an oil formed essentially of, or consisting of, carbon and hydrogen atoms and optionally oxygen and nitrogen atoms and not containing any silicon or fluorine atoms. It may contain alcohol, ester, ether, carboxylic acid, amine and / or amide groups.

[0039] Exemplary and non-limiting forms of oil based on hydrocarbon medium of oily dispersion include oil based on Petition 870170053980, dated 07 / 28 / 2017, p. 16 / 56 / 41 hydrocarbons containing up to about 40, such as 8 to 16 or 8 to 14, carbon atoms. Optionally, the hydrocarbon-based oil is nonpolar. For example, the hydrocarbon-based oil may be chosen from isododecane.

[0040] The oil dispersion can be prepared, for example, as described in WO2015 / 091513.

[0041] In various embodiments, the adhesive polymer may also have a Tg greater than about 25°C, such as greater than about 50°C, greater than about 75°C or greater than about 100°C, according to various embodiments.

[0042] At least one adhesive polymer may be present in the composition in an amount of up to about 25%, such as an amount ranging from about 5% to about 20%, from about 6% to about 18%, from about 7% to about 16%, from about 8% to about 15%, from about 9% to about 14% or relative to the weight of the composition. Fillers

[0043] The compositions may optionally comprise at least one filler. The fillers may be mineral or organic in nature and of any form. In various embodiments, the fillers may have a particle size greater than about 100 nm and / or a specific surface area greater than about 200 m² / g.

[0044] By way of non-limiting example, fillers may be chosen from talc, mica, silica, silica surface treated with a hydrophobic agent, fumigated silica, kaolin, polyamide powders (Nylon®) (e.g., Orgasol® from Atochem), polyurethane powders, poly-alanine powder and polyethylene powder, tetrafluoroethylene polymer powders (Teflon®), lauroyl lysine, starch, boron nitride, hollow polymeric microspheres, such as those of polyvinylidene chloride / acrylonitrile, e.g., Expancel® (Nobel Industrie) or acrylic acid copolymers (Polytrap® from Petition 870170053980, dated 07 / 28 / 2017, page 17 / 56 / 41 Dow Corning company) and silicone resin microbeads (Tospearls® from Toshiba, for example), elastomeric polyorganosiloxane particles, precipitated calcium carbonate, magnesium carbonate, magnesium hydrogen carbonate, hydroxyapatite, hollow silica microspheres (Silica Beads® from Maprecos), glass or ceramic microcapsules and metallic soaps derived from organic carboxylic acids containing 8 to 22 carbon atoms and preferably 12 to 18 carbon atoms, for example, zinc stearate, magnesium stearate or lithium stearate, zinc laurate or magnesium myristate.

[0045] In at least certain embodiments, at least one filler may be chosen from hydrophobic silica aerogel particles. Silica aerogels are porous materials obtained by replacing (by drying) the liquid component of a silica gel with air. Useful hydrophobic silica aerogel particles according to the embodiments of the description include silylated silica aerogel particles (INCI name: silica silylate). The preparation of hydrophobic silica aerogel particles that have been surface-modified by silylation is more fully described in U.S. Patent No. 7,470,725, incorporated by reference herein.

[0046] In several embodiments, hydrophobic silica surface aerogel particles modified with trimethylsilyl groups may be chosen. For example, the aerogel sold under the name VM-2260® by Dow Corning, whose particles have an average size of about 1000 microns and a specific surface area per unit mass ranging from 600 to 800 m2 / g, or the aerogel sold under the name VM-2270®, also by Dow Corning, whose particles have an average size ranging from 5 to 15 microns and a specific surface area per unit mass ranging from 600 to 800 m2 / g, may be chosen. In other forms, the aerogels sold by Cabot under the names Aerogel TLD 201®, Aerogel OGD 201® and Aerogel TLD 203®, CAB-O-SIL TS-530, CAB Petition 870170053980, dated 07 / 28 / 2017, p. 18 / 56 / 41 O-SIL TS-610, CAB-O-SIL TS-720, Enova Aerogel MT 1100® and Enova Aerogel MT 1200® are available options.

[0047] Optionally, mixtures of fillers may be present in the compositions according to the description. For example, a mixture of different hydrogel particles or of an aerogel and a different type of filler may be used.

[0048] At least one filler may be present in a total amount ranging from about 0.1% to about 20% by weight, for example, from about 0.2% to about 15%, from about 0.5% to about 10% or from about 1% to about 6%, by weight, relative to the total weight of the composition. In at least certain exemplary embodiments, the filler is present in an amount less than about 5%, such as less than about 4%, by weight, relative to the total weight of the composition. In one embodiment, the filler is present in an amount up to about 3% by weight, relative to the total weight of the composition. Additional Components

[0049] The compositions according to the description may optionally include additional components such as solvents, silicone elastomers, humectants, water and pigments. Solvents

[0050] The compositions may comprise at least one solvent. Optionally, the compositions may comprise at least one solvent chosen from solvents having a vapor pressure at room temperature (25°C) greater than about 100 Pa, such as greater than about 500 Pa or greater than about 1000 Pa. In several embodiments, the composition is free or substantially free of solvents having a vapor pressure at room temperature (25°C) less than about 25 Pa. In other embodiments, the composition may comprise at least one solvent having a vapor pressure at room temperature (25°C) greater than about Petition 870170053980, dated 07 / 28 / 2017, page 19 / 56 / 41 100 Pa, such as more than 500 Pa or greater than 1000 Pa, and at least one solvent having a vapor pressure at room temperature (25°C) less than about 100 Pa, such as less than about 50 Pa or less than about 25 Pa.

[0051] In several embodiments, the compositions comprise at least one volatile organic solvent. The volatile organic solvent may be chosen from, for example, volatile hydrocarbon-based oils and volatile silicone oils.

[0052] For example, volatile hydrocarbon oils include, but are not limited to, those having 8 to 16 carbon atoms and mixtures thereof, such as branched C8a C16 alkanes and C8a C16 isoalkanes (also known as isoparaffins), isododecane, isohexadecane. For example, at least one solvent may be chosen from oils sold under the trademarks Isopar® or Permetil®, branched C8a C16 esters such as isohexyl or isodecyl neopentanoate and mixtures thereof. In at least certain embodiments, volatile hydrocarbon oils have a flash point of at least 40°C. It is also possible to use mixtures of isoparaffins and other volatile hydrocarbon-based oils, such as petroleum distillates.

[0053] In addition, volatile silicone oils may be selected from linear or volatile silicone oils, such as those having a viscosity at room temperature (25°C) less than or equal to 6 cSt and having 2 to 7 silicon atoms, these silicones being optionally substituted by alkyl or alkoxy groups of 1 to 10 carbon atoms. Examples of volatile silicone oils that may be used include, but are not limited to, octamethyltetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, and mixtures thereof. At least in certain embodiments, silicone oils Petition 870170053980, dated 07 / 28 / 2017, page 20 / 56 / 41 volatiles have a flash point of at least 40°C.

[0054] Additionally, at least one volatile solvent may be chosen from polar volatile solvents, which include, but are not limited to, alcohols, volatile esters and volatile ethers.

[0055] The at least one solvent may be present in the composition in an amount up to about 95%, such as up to about 90%, up to about 85%, up to about 80%, up to about 75%, up to about 70%, up to about 65%, up to about 60%, up to about 55% or up to about 50%, by weight of the composition. For example, the at least one solvent may be present in the composition in an amount ranging from about 40% to about 95%, such as from about 50% to about 90% or from about 60% to about 85% or from about 65% to about 80%. Silicone Elastomer

[0056] The composition may, in addition, optionally comprise at least one silicone elastomer. Surprisingly, in certain embodiments, the at least one silicone elastomer may improve properties such as the thickness and water resistance of the film, without significantly affecting the mechanical or optical properties of the film. In other embodiments, the addition of at least one silicone elastomer may decrease wettability by sebum, which will help prevent the film from losing its stiffening properties. At least in certain embodiments it may be advantageous to choose a silicone elastomer having more than 1% active material (AM), such as more than 2% AM.

[0057] The at least one silicone elastomer may, for example, be chosen from at least one silicone crosspolymer dispersed in at least one oil. The at least one silicone crosspolymer, in certain embodiments, may be chosen from dimethicone crosspolymers, such as dimethicone / vinyl dimethicone crosspolymers and dimethicone / phenyl vinyl dimethicone crosspolymers. In other Petition 870170053980, dated 07 / 28 / 2017, page 21 / 56 / 41 embodiments, the silicone crosspolymer may be modified by one or more groups chosen from alkyl, polyether, or polyglyceryl groups. For example, alkyl-modified silicone crosspolymers may be chosen from vinyl dimethicone / lauryl dimethicone crosspolymers, cetearyl dimethicone crosspolymers, and C30-C45 cetearyl dimethicone alkyl crosspolymers. Non-limiting examples of polyether-modified silicone crosspolymers include dimethicone / PEG-10 / 15 crosspolymers. Exemplary polyether-modified alkyl and silicone crosspolymers may be chosen, for example, from PEG-10 / lauryl dimethicone crosspolymers and PEG-15 / lauryl dimethicone crosspolymers. Exemplary polyglycerin-modified silicone crosspolymers include dimethicone / polyglycerin-3 crosspolymers and lauryl dimethicone / polyglycerin-3 crosspolymers.

[0058] At least in certain embodiments, the silicone polymers do not comprise polyethylene glycol or polypropylene groups or hydrophilic moieties. Optionally, the silicone elastomer may be chosen from combinations of organic isododecane silicone (and) dimethicone crosspolymer (18% AM) sold under the name EL-8040 ID or dimethicone / bis-isobutyl PPG-20 crosspolymer (17% AM in isododecane) sold under the name EL-8050 ID, from Dow Corning or isododecane (and) vinyldimethyl / trimethylsiloxysilicate stearyl dimethicone crosspolymer (20% AM in isododecane), sold under the name GEL BELSIL RG90 by Wacker.

[0059] The silicone crosspolymer can be dispersed in at least one oil. In certain embodiments, the oil can be chosen from silicone oils, such as cyclic and linear organopolysiloxanes. Cyclic organopolysiloxanes may include, for example, cyclotetrasiloxane; cyclopentasiloxane and methylated cyclic organopolysiloxanes, for example, octamethylcyclotetrasiloxane and Petition 870170053980, dated 07 / 28 / 2017, page 22 / 56 / 41 decamethylcyclopentasiloxane. Non-limiting examples of linear organopolysiloxanes include low molecular weight dimethicones; high molecular weight dimethicones; alkyl derivatives of linear organopolysiloxanes, for example, cetyl dimethicone and lauryl trimethicone; aryl derivatives of linear organopolysiloxanes, for example, phenyl trimethicone and hydroxylated derivatives of linear organopolysiloxanes, for example, dimethiconol. In other embodiments, the oil may be chosen from organic oils, such as mineral oil; linear and branched alkanes, for example, isododecane; triethylhexanoin and squalene.

[0060] The at least one silicone crosspolymer may, in some embodiments, comprise from about 5% to about 35% by weight, relative to the total weight of the silicone elastomer blend, for example, from about 10% to about 20% by weight or from about 25% to about 35% by weight or from about 20% to about 30% by weight. The at least one oil may comprise from about 65% to about 95% by weight, relative to the total weight of the silicone elastomer blend, such as from about 80% to about 90% by weight or from about 65% to about 75% by weight or from about 70% to about 80% by weight.

[0061] In several exemplary embodiments, the silicone elastomer blend comprises about 20% to about 30% dimethicone / vinyl dimethicone crosspolymer. In other exemplary embodiments, the silicone elastomer blend comprises about 70% to about 80% by weight dimethicone. Still in other exemplary embodiments, the silicone elastomer blend comprises about 20% to about 30% dimethicone / vinyl dimethicone crosspolymer and about 70% to about 80% by weight dimethicone.

[0062] For example, silicone elastomers sold under the name KSG-16 dimethicone (e) dimethicone / vinyl dimethicone crosspolymer, KSG-21 (at 27% active material) INCI name: Crosspolymer of Petition 870170053980, dated 07 / 28 / 2017, page. 23 / 56 / 41 dimethicone / PEG-10 dimethicone vinyl dimethicone), KSG-20 (95% active material) INCI name: PEG-10 dimethicone crosspolymer), KSG30 (100% active material) INCI name: PEG-15 lauryl dimethicone vinyl dimethicone crosspolymer), KSG-31 (25% active material) INCI name: PEG-15 lauryl dimethicone vinyl dimethicone crosspolymer), KSG-32 or KSG-42 or KSG-320 or KSG-30 (25% active material) INCI name: PEG-15 lauryl dimethicone vinyl dimethicone crosspolymer), KSG-33: PEG-15 lauryl dimethicone vinyl dimethicone crosspolymer (20% active material), KSG-210 (at 25% active material) INCI name: Dimethicone / PEG-10 / 15 crosspolymer), KSG-310: polydimethylsiloxane modified by polyoxyethylened lauryl in mineral oil, KSG-330 and KSG-340: PEG-15 / lauryl dimethicone crosspolymer and X226146 (at 32% active material) INCI name: Dimethicone / PEG-10 dimethicone vinyl dimethicone crosspolymer),All products from Shin Etsu; DC9010 (9% active ingredient) and DC9011 (11% active ingredient) INCI name: PEG-12 dimethicone crosspolymer), DC9040 cyclopentasiloxane(e) dimethicone crosspolymer and DC9041 dimethicone(e) dimethicone crosspolymer, all from Dow Corning; or all products sold under the Momentive VELVESIL product line, such as VELVESIL 125 and VELVESIL DM, may be chosen.

[0063] Other examples of silicone elastomers include KSG-710 (at 25% active material, INCI name: dimethicone / polyglycerin-3 crosspolymer); and KSG-820, KSG-830 and KSG-840, all of which are dimethicone / polyglycerin-3 crosspolymer (INCI), but in different diluents, 820 is in isodecane, 830 is in triethylhexanoin and 840 is in squalene, all from Shin Estu.

[0064] At least one silicone elastomer may optionally be included in the composition in an amount of up to about 10%, such as up to about 8%, up to about 5%, up to about 4.5%, up to about 4%, Petition 870170053980, dated 07 / 28 / 2017, p. 24 / 56 / 41 up to about 3.5%, up to about 3%, up to about 2.5%, up to about 2%, up to about 1.5%, up to about 1%, up to about 0.75%, up to about 0.5%, up to about 0.25%, up to about 0.2% or up to about 0.1%, by weight, relative to the weight of the composition. In certain embodiments, at least one silicone elastomer may be present in an amount ranging from about 1% to about 10%, such as from about 2% to about 8%, from about 3% to about 6% or from about 4% to about 5%, by weight, relative to the weight of the composition. Humectants

[0065] Optionally, the compositions according to the description may comprise at least one humectant or moisturizing agent. Surprisingly, at least in certain embodiments, the at least one humectant may improve the optical properties and feel of the film formed on the skin by the composition, without negatively affecting the mechanical properties of the film.

[0066] By way of example only, humectants or wetting agents may be chosen from polyhydroxy compounds which include, but are not limited to, glycerin and glycols, such as, for example, propylene glycol, butylene glycol, dipropylene glycol and diethylene glycol, glycol ethers, such as alkyl ethers (C1-C4) of monopropylene, dipropylene and tripropylene glycol, monoethylene, diethylene and triethylene glycol.

[0067] At least one humectant may be present in the composition in an amount of up to about 20%, such as up to about 15%, up to about 14%, up to about 13%, up to about 12%, up to about 11%, up to about 10%, up to about 9%, up to about 8%, up to about 7%, up to about 6%, up to about 5%, up to about 4%, up to about 3%, up to about 2%, up to about 1% or up to about 0.5%, by weight of the composition. Water

[0068] Optionally, at least in certain modes, water may Petition 870170053980, dated 07 / 28 / 2017, p. 25 / 56 / 41, to be added to the compositions according to the description. Surprisingly, in certain non-limiting embodiments, water can improve the properties of the film formed on the skin by the composition, such as Young's modulus, transparency, cohesion, and thickness.

[0069] Water may be included in the composition in an amount of up to about 15%, up to about 12%, up to about 10%, up to about 9%, up to about 8%, up to about 7%, up to about 6%, up to about 5%, up to about 4%, up to about 3%, up to about 2%, up to about 1% or up to about 0.5%, by weight of the composition. At least in certain embodiments, the compositions are anhydrous or substantially anhydrous. In other embodiments, the compositions may be in the form of a water-in-oil (W / O) emulsion.

[0070] At least in certain forms it may be advantageous to include water and at least one humectant, for example, water and glycerin, together in the composition. Dyes

[0071] In addition, the composition may include at least one dye, for example, to create a colored film on the skin, which may be useful for concealing certain skin imperfections. In various embodiments, the at least one dye may be chosen from dyes, pigments, and mother-of-pearls.

[0072] At least one colorant may be, for example, chosen from colorants. Non-limiting examples of colorants include Sudan Red, D&C Red 17, D&C Green 6, β-carotene, soybean oil, Sudan Brown, D&C Yellow 11, D&C Violet 2, D&C Orange 5, quinoline yellow and annatto.

[0073] In several embodiments, at least one colorant may be chosen from pigments. As used herein, the term “pigments” is intended to mean white or colored mineral or organic particles that are insoluble in the composition in which they are present and that are intended to color and / or opacify the resulting film. Petition 870170053980, dated 07 / 28 / 2017, p. 26 / 56 / 41

[0074] By way of example, inorganic pigments that can be used include titanium oxides, zirconium oxides, cerium oxides, zinc oxides, iron oxides, chromium oxides, ferric blue, manganese violet, ultramarine blue and chromium hydrate. For example, pigments can be chosen from titanium dioxide and red, black and / or yellow iron oxide, as well as mixtures thereof.

[0075] In other embodiments, pigments with a structure that may be, for example, silica microspheres containing iron oxide type, may be used. An example of a pigment having this structure is the product sold by the Miyoshi company under the reference PC Ball PC-LL100 P, consisting of silica microspheres containing yellow iron oxide.

[0076] In addition, by way of example, organic pigments that can be used include nitroso compounds, nitro, azo, xanthene, pyrene, quinoline, anthraquinone, triphenylmethane, fluorane, phthalocyanine, metal complex, isoindolinone, isoindoline, quinacridone, perinone, perylene, diketopyrrolopyrrole, indigo, thioindigo, dioxazine, triphenylmethane and quinophthalone.For example, organic pigments can be chosen from carmine lake, carbon black, aniline black, azo yellow, quinacridone, phthalocyanine blue, the blue pigments coded in the color index under CI references 42090, 69800, 69825, 73000, 74100 and 74160, the yellow pigments coded in the color index under CI references 11680, 11710, 15985, 19140, 20040, 21100, 21108, 47000 and 47005, the green pigments coded in the color index under CI references 61565, 61570 and 74260, the orange pigments coded in the color index under CI references 11725, 15510, 45370 and 71105, the red pigments coded in the color index under references CI 12085, 12120, 12370, 12420, 12490, 14700, 15525, 15580, 15620, 15630, 15800, 15850, 15865, 15880, 17200, 26100, 45380, 45410, 58000, 73360, 73915 and 75470 and the pigments obtained by oxidative polymerization of indole or phenolic derivatives as described in patent FR 2 679. Petition 870170053980, dated 07 / 28 / 2017, p. 27 / 56 / 41 771.

[0077] Mother-of-pearls can be selected from white pearlescent pigments such as titanium-coated mica or bismuth oxychloride-coated mica, colored pearlescent pigments such as titanium mica with iron oxides, titanium mica in particular with ferric blue or chromium oxide, titanium mica with an organic pigment of the type mentioned above and pearlescent pigments based on bismuth oxychloride.

[0078] One or more colorants may optionally be included in the composition in an amount of up to about 5%, such as up to about 4.5%, up to about 4%, up to about 3.5%, up to about 3%, up to about 2.5%, up to about 2%, up to about 1.5%, up to about 1%, up to about 0.75%, up to about 0.5%, up to about 0.25%, up to about 0.2% or up to about 0.1% by weight, relative to the weight of the composition.

[0079] It should be understood that the greater the amount of dye added, the greater the effects of the film on the skin to conceal skin imperfections such as pores, pimples, dark spots and the like. Therefore, the qualified technician will choose an appropriate amount of dye for the composition, keeping in mind the intended use of the final formulation. Film

[0080] When the compositions according to the description are applied to the skin, at least one thermoplastic elastomer, at least one adhesive polymer, and at least one filler together form a matrix that creates a film on the skin. The films formed by the compositions described herein form rapidly, are long-lasting and durable, and have optical properties that are advantageous for a skin-tightening film, such as transparency, a matte effect, and a soft-focus effect that helps to obscure skin imperfections so that they are less visible.

[0081] Additionally, as discussed above, the compositions according to the description form a film that is harder than and this Petition 870170053980, dated 07 / 28 / 2017, p. 28 / 56 / 41, describes a method capable of stiffening human skin. Human skin has a Young's Modulus in the range of 10 kPa to 100 kPa; therefore, a film to stiffen the skin must have a Young's Modulus greater than 100 kPa. The films formed as compositions have a Young's Modulus greater than 500 kPa (0.5 MPa) in some embodiments, greater than 1000 kPa (1 MPa) in some embodiments, greater than 5000 kPa (5 MPa) in some embodiments, and even greater than 10,000 kPa (10 MPa) in some embodiments. Additionally, the compositions according to the description have sufficient consistency G* and a phase angle below 45° in order to form an effective and long-lasting film on the skin.

[0082] As such, the quantities and components of the composition must be chosen to provide a film on the skin that is able to tighten the skin, while also concealing skin imperfections.

[0083] In several exemplary embodiments, for the best film properties, it may be advantageous for the total amount of thermoplastic elastomer plus adhesive polymer plus filler to be greater than about 10%, such as greater than about 15% or greater than about 20%, by weight, of the total weight of the composition.

[0084] In other exemplary embodiments, for the best film properties, it may be advantageous for the quantities of thermoplastic elastomer and adhesive polymer to be chosen so that the thermoplastic elastomer:adhesive polymer ratio is in the range of about 1:10 to 10:1, in the range of about 1:5 to 5:1 or in the range of about 1:1 to 8:1.

[0085] Films can be formed quickly, for example, within less than about 30 minutes, less than about 20 minutes, less than about 10 minutes or less than about 5 minutes, after the composition is applied to the skin.

[0086] The films described may be long-lasting. For example, once the composition is applied to the skin and a Petition 870170053980, dated 07 / 28 / 2017, p. 29 / 56 / 41 film is formed, the film can remain substantially intact on the skin for a period of at least about 12 hours, such as at least about 24 hours, at least about 48 hours or at least about 72 hours.

[0087] The films can also be durable. For example, they may not come off with rubbing, they may not come off with sweat, or when the film comes into contact with water, makeup, lotions, or other products that the user may wish to apply to the skin. Methods

[0088] Methods of improving the appearance of the skin are also described, said methods comprising applying a composition as described to the skin in order to form a film on the skin. The methods comprise tightening the skin, for example, to get rid of or reduce the appearance of wrinkles, dark circles, etc., and / or obscuring or concealing imperfections in the skin, for example, to disguise pimples, pores, dark spots, etc.

[0089] According to various methods, different compositions can be applied to the skin to form films having different properties, such as compositions comprising larger or smaller amounts of pigments depending on whether skin imperfections may require more or less concealment, etc.

[0090] It should be understood that, as used herein, the terms “the”, “a” or “an” mean “at least one” and should not be limited to “only one” unless explicitly indicated otherwise. In this way, for example, reference to “a portion” includes examples having two or more such portions unless the context clearly dictates otherwise.

[0091] Unless expressly stated, it is in no way intended that any method presented here is constructed as requiring that these steps be performed in a specific order. Petition 870170053980, dated 07 / 28 / 2017, pp. 30 / 56 / 41 Consequently, when a method claim does not actually cite an order to be followed by its steps, or it is not otherwise specifically stated in the claims or descriptions that the steps must be limited to a specific order, it is not intended that any particular order be inferred.

[0092] While various features, elements, or steps of particular embodiments may be described using the transition phrase “comprising,” it should be understood that alternative embodiments, including those that may be described using the transition phrases “consisting of” or “consisting essentially of,” are implied. In this way, for example, the alternative embodiments implied to a method comprising A+B+C include embodiments where a method consists of A+B+C and embodiments where a method consists essentially of A+B+C. As described, the phrase “at least one of A, B, and C” is intended to include “at least one A or at least one B or at least one C,” and is also intended to include “at least one A and at least one B and at least one C.”

[0093] All ranges and quantities given herein are intended to include subranges and quantities using any point described as an endpoint. Thus, a range of “1% to 10%, such as 2% to 8%, such as 3% to 5%,” is intended to encompass the ranges of “1% to 8%,” “1% to 5%,” “2% to 10%,” and so forth. All numbers, quantities, ranges, etc., are intended to be modified by the term “about,” whether or not expressly stated. Similarly, a given range of “about 1% to 10%” is intended to have the term “about” modifying both the 1% and 10% endpoints.

[0094] It is understood that when a quantity of a component is given, it is intended to mean the quantity of the active material.

[0095] It should be understood that all patents and patent applications Petition 870170053980, dated 07 / 28 / 2017, pp. 31 / 56 / 41, the published references are incorporated herein in their entirety.

[0096] Unless otherwise indicated, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all examples by the term "about". Consequently, unless otherwise indicated, the numerical parameters presented in the following specifications and appended claims are approximations that may vary depending on the desired properties thought to be obtained by the present description.

[0097] However, the numerical ranges and parameters that encompass the broad scope of the description are approximations, unless otherwise indicated the numerical values ​​presented in the specific examples are reported as precisely possible. Any numerical value, however, inherently contains certain errors that necessarily result from the standard deviation found in their respective test measurements. The following example serves to illustrate embodiments of the present invention without, however, being limiting in nature.

[0098] The compositions and methods according to the present description may comprise, consist of, or consist essentially of the elements and limitations described herein, as well as any additional or optional ingredients, components, or limitations described herein or otherwise known in the art.

[0099] It will be evident to those skilled in the art that various modifications and variations can be made to the release system, composition, and methods of the invention without departing from the spirit or scope of the invention. In this way, it is intended that the present invention encompasses modifications and variations of this invention provided that they are within the scope of the appended claims and their equivalents. EXAMPLES Petition 870170053980, dated 07 / 28 / 2017, pages 32 / 56 / 41

[00100] The following examples are provided for illustrative purposes only and are not intended to be exhaustive.

[00101] In each of the following examples, the component quantities given are in terms of active material (AM). Dynamic Mechanical Analysis (DMA)

[00102] The determination of the Young's Modulus of the films for all Examples was as follows. The film was made using an 8'' withdrawal rod to melt the solution onto a Teflon plate and the film dried at 40°C in an oven overnight. The TA Instruments DMA Q800FR was used to measure the stress-force response of the dried film. Deformation was applied from 0% force to 200% force at a rate of 100% force / minute at 32°C. Then, the Young's Modulus of the film was determined from the arc of the stress-force curve in the linear viscoelastic regime. Measurement by scanning electron microscopy (SEM)

[00103] The film sample for SEM was prepared using the same method as for the DMA measurement. Subsequently, the film was cut into a 5x5 mm piece and loaded in one stage with a double-sided carbon tape. The sample was scanned with a Hitachi TM-1000 Tabletop SEM. Rheology Measurement

[00104] The rheology of the sample solutions was measured using the AR-G2 Rheometer from TA instruments. The dynamic oscillation mode was used with the 20 mm diameter parallel plate in a 200 µm slit.

[00105] A force sweep from 0.001% to 1000% at an oscillation frequency of 1 rad / s was applied to the sample at 32°C. The values ​​of the elastic modulus G' and viscous modulus G'' at 10% force were recorded for each sample measured. The complex modulus G* (consistency) and phase angle δ collected at 10% force (in linear viscoelastic regime) were Petition 870170053980, dated 07 / 28 / 2017, page 33 / 56 27 / 41 calculated from the elastic modulus G' and viscous modulus G” using the following equations: G* = J^Tg^ = arcta, Cloudiness and Transparency - BYK Cloudiness - Guard

[00106] The film was made using an 8-inch withdrawal bar to fuse the solution into a transparent plastic film and bench-dried for 3 hours. The BYK Turbidity-Guard instrument was used to measure the transparency and turbidity of the film. Gloss - BYK Glossmeter

[00107] The film was removed using an 8-inch stripping bar to fuse the solution into a transparent plastic film and bench-dried for 3 hours. The BYK Glossmeter was used to measure the gloss and opacity of the film. Film Permeability

[00108] The film was removed using an 8-inch removal rod to melt the solution onto a Teflon plate, and the film was dried at 40°C in an oven overnight. The film was removed and cut into 5x5 cm pieces. Each piece was used to cover the scintillation flask filled with 2 ml of water, and a piece of Parafilm was used to wrap the film piece on the side. The weight of each flask was measured immediately as well as at different time points. The water weight loss of different films was plotted at different time points, and evaporation was calculated by fitting the evaporation curve with a linear function. The water vapor permeability of the film (P) is calculated with the following equation, where ( is a water vapor permeation flux; is the film thickness, and is a water vapor pressure difference between the space sealed by the film in the flask and the outside of the film, which is the Petition 870170053980, dated 07 / 28 / 2017, pages 34 / 56 28 / 41 environment: P Contact Angle Measurement

[00109] The film was removed using an 8” removal bar to melt the solution onto a glass slide and bench-dried overnight. The contact angle of the film on the glass slide was measured using a Biolin Scientific Attension tensiometer. Drying Speed

[00110] The film was removed using an 8-inch removal bar to melt the solution into a clear, weighed plastic film regularly over a period of one hour. Internal Restriction

[00111] The film was removed using an 8-inch stripping bar to melt the solution onto a nitrile strip and allowed to dry for a period of one hour. As the film shrinks upon drying, the surface area of ​​the nitrile strip is measured by image analysis. Transparency, Homogenization Strength and Whitening Strength MINOLTA Colorimeter

[00112] The film was made by fusing the solution onto a transparent plastic film using a stripping bar (2 mil) and left to dry on the bench for 1 hour. The Minolta colorimeter was used to measure the L, a*, b* and Y of the film and of a skin tone reference slide and black and white reference, in order to calculate the transparency, homogenization strength and bleaching strength of the films. Use and Coverage

[00113] The films were applied to the cheeks of 3 participants with pimples and pores along the nose / cheek area and left for 6 hours. The latter was evaluated before / after photographs. Brightness, pore concealment, and coverage of imperfections were assessed for periods before and after. Petition 870170053980, dated 07 / 28 / 2017, pages 35 / 56 29 out of 41 evaluated. Example 1: Association of Thermoplastic Elastomer, Adhesive Polymer and Filler

[00114] A thermoplastic elastomer, Kraton (25%), was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring continued at 90°C for 1 to 2 hours until all the Kraton polymer was dissolved and the polymer solution became clear. The desired amounts of oil dispersion (49% isododecane) and silica silylate were added to the Kraton / isoparaffin oil solution in the specified ratios in a plastic container, and the solution was mixed with a high-speed mixer at 2500 rpm / minute for 5 minutes. The final solution was kept at room temperature and sealed to prevent solvent evaporation.

[00115] The following Table 1 shows a comparison of the film formed from the compositions prepared according to the description (Ex. 1) and three comparative compositions (Ex. IC-1; IC-2; 1C-3). Table 1: Demonstration of the association of thermoplastic elastomer, adhesive polymer and filler for superior performance. Ex. 1 Ex. 1C-1 Ex. 1C-2 Ex. 1C-3 Ratio—Kraton (AM):OD (AM) 1:1 1:0 0:1 1:1 HYDROGENATED STYRENE / BUTADIENE COPOLYMER 12.1% 24.2% 0.0% 12.1% OILY DISPERSION 12.1% 0.0% 24.2% 12.1% SILICA SILYLATE 3.0% 3.0% 3.0% 0.0% ISODODECANE 38.3% 38.3% 38.3% 41.3% C8-9 ISOPARAFFIN 34.5% 34.5% 34.5% 34.5% Total 100.0% 700.0% 700.0% 700.0% G*(10% strength) Pa 1772.5 6493.8 36.8 58.9 δ (10% strength) ° 35.4 28.0 35.0 57.2 Young's Modulus of the Film (MPa) at 32°C 32.7 7.4 42.9 10.75 % of maximum film strength before breakage > 100% > 100% > 100% > 100% CONCLUSION GOOD Film is too soft Film is too fluid = film is too fluid Film is too fluid = film is too fluid

[00116] The formulations and films were evaluated as presented above. From the examples, the G* consistency of the sample should be greater than approximately 100 Pa (at 10% strength) and the phase angle below Petition 870170053980, dated 07 / 28 / 2017, pages 36 / 56 30 / 41 of approximately 45° for best results, as the formula needs to be a gel to form good film properties. If the film is too fluid, it will be too thin and the performance will not be good. Therefore, Examples 1 and 1C-1 satisfy these conditions where G* > 100 Pa and the phase angle < 45°.

[00117] Example 1 has the best Young's Modulus and the best consistency, to provide a film having the best properties to stiffen the skin, demonstrating superior performance of the combination of thermoplastic elastomer, adhesive polymer and filler. Example 2: Thermoplastic Elastomer to Adhesive Polymer Ratio

[00118] The procedure for preparing the compositions of Example 2 is the same as described above for Example 1. The following Table 2 shows the comparison of the formulations according to the description and the films formed from them (Ex. 2a; 2b; 2c) and two comparative compositions (Ex. 2C-1; 2C-2). Table 2: Selection of optimal minimum / maximum thermoplastic elastomer:adhesive polymer ratio Ex. 2a Ex. 2b Ex. 2c Ex. 2C-1 Ex. 2C-2 Ratio—Kraton (AM):OD (AM) 5 1 0.25 1 0 HYDROGENATED STYRENE / BUTADIENE COPOLYMER 20.1% 12.1% 4.8% 24.2% 0.0% OILY DISPERSION 4.1% 12.1% 19.4% 0.0% 24.2% SILICA SILYLATE 3.0% 3.0% 3.0% 3.0% 3.0% ISODODECANE 38.3% 38.3% 38.3% 38.3% 38.3% C8-9 ISOPARAFFIN 34.5% 34.5% 34.5% 34.5% 34.5% Total 100.0% 100.0% 700.0% 700.0% 700.0% G*(10% strength) Pa 3389.3 1772 386.9 6494 3675 δ (10% strength) ° 34.8 35 31.5 28.0 35 Young's Modulus (MPa) at 32°C 13.7 29.8 78.2 8.0 43.5 CONCLUSION Acceptable film Good film properties Good film properties Very soft film Very fluid formula = Very thin film

[00119] The formulations and films were evaluated as presented above. From the results, Ex. 2a, 2b and 2c all have good consistency with G* > 100 Pa and a phase angle less than 45° as well as a Young's modulus >100 kPa. Ex. 2C-1 (without the oily dispersion) with the Young's modulus was very soft and Ex. 2C-2 (without the Kraton polymer) with Petition 870170053980, dated 07 / 28 / 2017, pages 37 / 56 31 / 41 The high Young's modulus was very thin. Therefore, the results showed that if the elastomer (Kraton) content is high, this can result in a very soft film, while with a high adhesive polymer content (oil dispersion), the formulation is very fluid. As a result, the film becomes very thin and the performance is not good on the skin. This shows that the ratio of thermoplastic elastomer to adhesive polymer optionally varies between 1:5 and 5:1. Example 3: Comparison of Different Adhesive Polymers

[00120] The thermoplastic elastomer, Kraton (25%), was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring continued at 90°C for 1 to 2 hours until all the Kraton polymer was dissolved and the polymer solution became clear. The desired amounts of adhesive polymer and silica silylate were added to the Kraton / isoparaffin oil solution in the specified ratios in a plastic container, and the solution was mixed with a high-speed mixer at 2500 rpm / minute for 5 minutes. The final solution was kept at room temperature and sealed to prevent solvent evaporation.

[00121] The following Table 3 shows the comparison of the film formed from the compositions according to the description (Ex. 3a; 3b; 3c). Table 3: Comparison of different adhesive polymers Ex. 3a Ex. 3b Ex. 3c HYDROGENATED STYRENE / BUTADIENE COPOLYMER 11.1% 11.1% 11.1% OILY DISPERSION 11.1% - - HYDROGENATED POLYCYCLOPENTADIENE - 11.1% - HYDROGENATED STYRENE / METHYLSTYRENE / INDENE COPOLYMER - - 11.1% ISODODECANE (E) DIMETHICONE CROSSPOLYMER 4.5% 4.5% 4.5% SILICA SILYLATE 3.0% 5% 5% C8-9 ISOPARAFFIN 33.3% 33.3% 33.3% ISODODECANE 37.0% 37.0% 37.0% Total 100.0% 700.0% 700.0% Young's Modulus (32C, MPa) 17.84 7.66 8.0 CONCLUSION Good mechanical properties Good mechanical properties Good mechanical properties

[00122] The films were evaluated as presented above. The results in Table 3 show that Examples 3a-3c, prepared according to Petition 870170053980, dated 07 / 28 / 2017, pages 38 / 56 32 / 41 with the description with different adhesive polymers, each provides films with good mechanical properties. Example 4: Effectiveness of Film for Concealing Skin Imperfections Example 4A: Composition

[00123] The procedure for preparing the composition of Example 4A is the same as described above for Example 1. The following Table 4A shows a composition prepared according to the description (Ex. 4a) to form a film on the skin. Table 4A: Composition for forming a film Ex. 4a Hydrogenated Styrene / Butadiene Copolymer 12.1% Oil Dispersion 12.1% Silicon Silylate 3.0% Isododecane 38.3% C8-9 Isoparaffin 34.5% Total 100.0% Transparency 90.5% Turbidity 91.4%

[00124] The film was evaluated as presented above. The high transparency and cloudiness achieved by the film prepared according to the description demonstrates the effectiveness of the film in obscuring or concealing skin imperfections. Example 4B: Effectiveness of the Film Formed

[00125] The film prepared according to Example 4A was applied to the skin of the eye area of ​​6 test subjects with grade 4 eye wrinkles and dark circles and 6 test subjects with grade 4 crow's feet. The film was allowed to dry for 10 minutes, after which improvements in the appearance of eye wrinkles and crow's feet were periodically assessed. The results are shown in Table 4B. Table 4B: Film effectiveness in improving skin appearance 10 minutes 30 minutes 3 hours 6 hours Under dark circles grade -2 grade -2.4 grade -2.5 grade -2.3 Crow's feet grade -2 grade -2.5 grade -2.4 grade -2 Under eye wrinkles -2.5 grade -2.5 grade -2.5 grade -2

[00126] The clinical assessment was based on a grading scale for eye wrinkles and dark circles (Skin Aging Atlas, vol 1, Caucasian type, Petition 870170053980, dated 07 / 28 / 2017, pp. 39 / 56 33 / 41 (Roland Bazin, Eric Doublet, Med'Com editions, 2007). The results in Table 4B demonstrate that the film prepared according to the description significantly improves the appearance of dark circles, eye wrinkles, and crow's feet. The results also demonstrate that over time, the improvement remains approximately constant, showing that the film provides long-lasting results. Example 5: Adding a Humectant to Improve Moisture

[00127] The thermoplastic elastomer, Kraton (25%), was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring continued at 90°C for 1 to 2 hours until all the Kraton polymer was dissolved and the polymer solution became clear. The desired amounts of adhesive polymer and silica silylate were added to the Kraton / isoparaffin oil solution in the specified ratios in a plastic container and the solution was mixed with a high-speed mixer at 2500 rpm / minute for 5 minutes, then glycerin was added and mixing continued. The final solution was kept at room temperature and sealed to prevent solvent evaporation.

[00128] The following Table 5 shows the evaluation of the film formed from the composition as described with glycerin (Ex. 5) compared with a comparative film of the composition as described but not containing glycerin (Ex. 5C-1). Table 5: Ability of the composition to include glycerin as a wetting agent without affecting film performance. Ex. 5 Ex. 5C-1 Hydrogenated Styrene / Butadiene Copolymer 11.3% 11.3% Oil Dispersion 11.3% 11.3% Silicon Silylate 3.0% 3.0% Glycerin 5.0% - Isododecane 37.5% 42.5% C8-9 Isoparaffin 32.0% 32.0% Total 100.0% 100.0% Young's Modulus (MPa) at 32 °C 34.3 34.0 Mechanical Properties Good Good Film Appearance Transparent, soft focus Transparent, soft focus Skin Feel Moisturizing Non-moisturizing Petition 870170053980, dated 07 / 28 / 2017, pages 40 / 56 34 / 41

[00129] The films were evaluated as described above. The results in Table 5 demonstrate that the film formed from the composition as described and containing a humectant (glycerin) surprisingly does not negatively affect the mechanical or optical properties of the film, and even provided a moisturizing sensation to the film on the skin compared to the film not containing the humectant. Example 6: Adding Water

[00130] The thermoplastic elastomer, Kraton (25%), was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring continued at 90°C for 1 to 2 hours until all the Kraton polymer was dissolved and the polymer solution became clear. The desired amounts of adhesive polymer and silica silylate were added to the Kraton / isoparaffin oil solution in the specified ratios in a plastic container and the solution was mixed with a high-speed mixer at 2500 rpm / minute for 5 minutes, then glycerin and / or water were added and mixing continued. The final solution was kept at room temperature and sealed to prevent solvent evaporation.

[00131] The following Table 6 shows the evaluation of the films formed from the composition according to the description with glycerin (Ex. 6a) or with glycerin and water (Ex. 6b-6e). Table 6: Capacity of the composition to include water Ex. 6a Ex. 6b Ex. 6c Ex. 6d Ex. 6e HYDROGENATED STYRENE / BUTADIENE COPOLYMER 10.8% 10.8% 10.8% 10.8% 10.8% OILY DISPERSION 10.8% 10.8% 10.8% 10.8% 10.8% C8-9 Isoparaffin 32.4% 32.4% 32.4% 32.4% 32.4% Isododecane 24.7% 23.7% 22.7% 20.7% 14.7% SILICA SILYLATE 2.7% 2.7% 2.7% 2.7% 2.7% SYNTHETIC WAX 1.8% 1.8% 1.8% 1.8% 1.8% Glycerin 14.2% 14.2% 14.2% 14.2% 14.2% Cetyl PEG / PPG-10 / 1 Dimethicone 2.0% 2.0% 2.0% 2.0% 2.0% Polyglyceryl-4 Isostearate 0.6% 0.6% 0.6% 0.6% 0.6% Water - 1.0% 2.0% 4.0% 10.0% Total 700.0% 700.0% 700.0% 700.0% 700.0% Young's Modulus (MPa) at 25 °C 21.6 30.3 33.9 34.7 42.4 Petition 870170053980, dated 07 / 28 / 2017, page 41 / 56 / 41 Measurement WITHOUT pore density (qualitative) high medium low low Low Appearance translucent translucent translucent translucent slightly white CONCLUSION Good film properties Good film properties Good film properties Good film properties Acceptable film properties

[00132] The films were evaluated as described above. The results in Table 6 demonstrate that, surprisingly, the addition of water to the composition improves the mechanical properties, intensifying the cohesion as seen by the SEM results. Additionally, the optical properties, such as transparency and soft focus, were not affected. Example 7: Addition of Silicone Elastomer

[00133] The thermoplastic elastomer, Kraton (25%), was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring continued at 90°C for 1 to 2 hours until all the Kraton polymer was dissolved and the polymer solution became clear. The desired amounts of oil dispersion (49% isododecane), silica silylate, and silicone elastomer (organic silicone blend DC EL-8040 ID at 18% isododecane) were added to the Kraton / isoparaffin oil solution in the specified ratios in a plastic container, and the solution was mixed with a high-speed mixer at 2500 rpm / minute for 5 minutes. The final solution was kept at room temperature and sealed to prevent solvent evaporation.

[00134] The film was placed on contrast cards with an 8 ml take-up bar. After drying overnight, the film was removed for BMA measurements or simply retained as a substrate for optical effects.

[00135] The following Table 7 shows the evaluation of the film formed from the composition as described with a silicone elastomer (Ex. 7) compared with a comparative film formed from the composition as described, but not containing a silicone elastomer (Ex. 7C-1). Petition 870170053980, dated 07 / 28 / 2017, pages 42 / 56 36 / 41 Table 7: Additional benefits provided by silicone elastomer Ex. 7 Ex. 7C-1 HYDROGENATED STYRENE / BUTADIENE COPOLYMER 11.1% 11.1% OILY DISPERSION 11.1% 11.1% SILICA SILYLATE 3.0% 3.0% C8-9 ISOPARAFFIN 33.3% 33.3% ISODODECANE 37.0% 41.5% DIMETHICONE CROSSPOLYMER 4.5% - Total 700.0% 700.0% Transparency % 91.3 90.5 Turbidity % 97.7 91.4 Water permeability (mg / h / cm2-pm) 26 14 Water contact angle 121 112 Water contact angle (°) 70 0 Young's modulus (Modulus of Storage temperature, 32°C, MPa) 24.7 33.5 Coefficient of Friction (1 pass) 0.26 0.99

[00136] The films were evaluated as described above. The results in Table 7 demonstrate that the addition of a silicone elastomer improves the optical properties of the film, enhancing soft focus effects without negatively affecting transparency. Additionally, the film's water permeability is improved, as it is advantageous for sweat to pass through the film, allowing the stiffening properties to remain for a longer period of time. Example 8: Evaluation of Different Silicone Elastomers

[00137] The procedure for preparing the compositions of Example 8 is the same as described above for Example 7. The following Table 8 shows the evaluation of films formed with different silicone elastomers (Ex. 8a, 8b, 8c, 8d). Table 8: Selection of silicone elastomer for best performance Ex. 8a Ex. 8b Ex. 8c Ex. 8d HYDROGENATED STYRENE / BUTADIENE COPOLYMER 11.1% 11.1% 11.1% 11.1% OILY DISPERSION 11.1% 11.1% 11.1% 11.1% SILICA SILYLATE 3.0% 3.0% 3.0% 3.0% C8-9 ISOPARAFFIN 33.3% 33.3% 33.3% 33.3% ISODODECANE 37.0% 37.0% 37.0% 37.0% ISODODECANE (E) DIMETHICONE CROSSPOLYMER (18% AM) 4.5% - - - DIMETHICONE / BISISOBUTYL PPG-20 CROSSPOLYMER (17% AM in isododecane) - 4.5% - - PEG-15 / LAURYL DIMETHICONE CROSSPOLYMER (25% AM in isododecane) - - 4.5% - ISODODECANE (and) VINYLDIMETHYL / TRIMETHYLSILOXYSILICATE STEARYL DIMETHICONE CROSSPOLYMER (20% AM in isododecane) - - - 4.5% Total 700.0% 700.0% 700.0% 700.0% Contact angle (°) - water 120.8 114.8 112.8 123.5 Contact angle (°) - tallow 70.2 Near 0 Near 0 91.4 Petition 870170053980, dated 07 / 28 / 2017, pages 43 / 56 37 / 41

[00138] The films were evaluated as described above. The results in Table 8, which show a high contact angle with water, demonstrate that the films containing different silicone elastomers show good water resistance. Example 9: Evaluation of Different Fillers

[00139] The procedure for preparing the compositions of Example 9 is the same as described above for Example 7. The following Table 9 shows the evaluation of films formed according to the description with different silica particles (Ex. 9a, 9b), in comparison with the comparative films (Ex. 9C-1, 9C-2, 9C-3). Table 9: Filler selection Ex. 9a Ex. 9b Ex. 9C-1 Ex. 9C-2 Ex. 9C-3 HYDROGENATED STYRENE / BUTADIENE COPOLYMER 11.1% 11.1% 11.1% 11.1% 11.1% OILY DISPERSION (49% AM) 11.1% 11.1% 11.1% 11.1% 11.1% SILICA SILYLATE: DOW CORNING VM-2270 AEROGEL FINE PARTICLES (size 8 µm Surface area: 600-800 m² / g) 3.0% DIMETHYL SILICA SILYLATE: PACKER HDK H 15 (size 16 nm Surface area: 90-130 m² / g) - - 3.0% - - SILICA SILYLATE: CAB-O-S1L TS-530 (size 200-300nm Surface area: 205-245 m2 / g) - 3.0% - - - STYRENE / ACRYLATES COPOLYMER: Sunspheres Rhom & Haas (size 300-350 nm Surface area: N / A) - - - 3.0% - POLYMETHYL METHACRYLATE: SEP1MAT H 10 Seppic (size 5-20 µm Surface area: 2.1-2.3 m2 / g) - - - - 3.0% ISOPARAFFIN C8-9 33.3% 33.3% 33.3% 33.3% 33.3% ISODODECANE 37.0% 37.0% 37.0% 37.0% 37.0% ISODODECANE (E) DIMETHICONE CROSSPOLYMER (18% AM) 4.5% 4.5% 4.5% 4.5% 4.5% Total 100.0% 700.0% 700.0% 700.0% 700.0% Film Homogeneity Good Good Good Good Good Young's Modulus (32°C, MPa) 24.7 20.8 15.2 2.7 8.1 Transparency% 91.3 90.4 90.6 82.5 90.1 Cloudiness% 97.7 86.9 93.3 79.8 89.2 Brightness 9.1 8.6 9.3 10.6 10.3 CONCLUSION GOOD - Better cloudiness GOOD GOOD GOOD film but very soft; softer focus lower POOR,

[00140] The films were evaluated as described above. The Petition 870170053980, dated 07 / 28 / 2017, pages 44 / 56 Results 38 / 41 in Table 9 demonstrate that the addition of different silica particles provides improved mechanical film properties, as shown by Young's Modulus measurements. The improvement is even more pronounced with silicas with particle sizes larger than 100 nm and higher specific surface area. Optical properties, including soft focus and sebum absorption, are also improved. Example 10: Comparison of Different Filler Ratios

[00141] The procedure for preparing the compositions of Example 10 is the same as described above for Example 7. The following Table 10 shows the evaluation of films formed with different amounts of silica particles (Ex. 10a, 10b, 10c, 10d). Table 10: Selection of filler ratio in the optimal composition Ex. 10a Ex. 10b Ex. 10c Ex. 10d HYDROGENATED STYRENE / BUTADIENE COPOLYMER 11.1% 11.1% 11.1% 11.1% OILY DISPERSION (49% AM) 11.1% 11.1% 11.1% 11.1% SILICA SILYLATE (Aerogel) 0.5% 1.5% 3.0% 4.0% C8-9 ISOPARAFFIN 33.3% 33.3% 33.3% 33.3% ISODODECANE 39.5% 38.5% 37.0% 36.0% ISODODECANE (E) DIMETHICONE CROSSPOLYMER (18% AM) 4.5% 4.5% 4.5% 4.5% Total 100.0% 100.0% 100.0% 100.0% Young's Modulus (32°C, MPa) 9.5 13.4 30.2 40.4 Film Appearance Soft focus transparent Soft focus transparent Soft focus transparent Soft focus transparent - Slightly white Film Appearance on Skin OK - tends to accentuate wrinkles Good Good OK - tends to create artificial wrinkles

[00142] The films were evaluated as described above. The results in Table 10 demonstrate that different quantities of Aerogel particles provide satisfactory results. Example 11: Solvent Evaluation

[00143] The procedure for preparing the compositions of Example 11 is the same as described above for Example 7. The following Table 11 shows the evaluation of a film formed according to the description having a solvent with a vapor pressure of 1000 Pa at room temperature (Ex. 11) compared with a comparative film without a solvent. Petition 870170053980, dated 07 / 28 / 2017, pages 45 / 56 39 / 41 with a vapor pressure of 1000 Pa at room temperature (Ex. 1 IC-1). Table 11: Solvent selection for optimal performance Ex. 11 Ex. 11C-1 HYDROGENATED STYRENE / BUTADIENE COPOLYMER 11.10% 11.10% OILY DISPERSION 11.10% 11.10% SILICA SILYLATE 3.00% 3.00% C8-9 ISOPARAFFIN 33.30% - ISODODECANE 37.00% 70.30% ISODODECANE (AND) DIMETHICONE CROSSPOLYMER 4.50% 4.50% Total 100.0% 700.0% INTERNAL RESTRICTION (1-4; 1 lowest / 4 highest) 4 2 DRYING SPEED 7 min 30 min YOUNG MODULUS (32C) in 1 hour 24.7 18.5 FEEL OF FIRMING (skin) STRONG MEDIUM

[00144] The films were evaluated as described above. The tightening effect of the film was evaluated after application to the skin of 5 participants under the eye area, who rated the tightening sensation as strong, medium, or low.

[00145] The results in Table 11 demonstrate that using a solvent with a vapor pressure of 1000 Pa at room temperature shows better results. As also seen, a solvent with a vapor pressure lower than 25 Pa at room temperature has worse results, although some stiffening is observed. Example 12: Addition of Pigments

[00146] The thermoplastic elastomer, Kraton (25%), was dispersed in isoparaffin oil with a mechanical stirrer and heated to 90°C. Stirring continued at 90°C for 1 to 2 hours until all the Kraton polymer was dissolved and the polymer solution became clear. The desired amounts of oil dispersion (49% in isododecane), silica silylate, silicone elastomer (organic blend of DC EL-8040 ID silicone in 18% isododecane), and pigments were added to the Kraton / isoparaffin oil solution in the specified ratios in a plastic container, and the solution was mixed with a high-speed mixer at 2500 rpm / minute for 5 minutes. The final solution was kept at room temperature and sealed to prevent solvent evaporation. Petition 870170053980, dated 07 / 28 / 2017, pages 46 / 56 40 / 41

[00147] The following Table 12 shows the comparison of formulations according to the description with pigments and the films formed from these (Ex. 12a; 12b; 12c) and two comparative commercial formulations. Table 12: Additional benefits due to the addition of pigments Ex. 12a Ex. 12b Ex. 12c Teint Idole Lancome Revitalift Miracle Obscurecer (L'Oréal Paris) HYDROGENATED STYRENE / BUTADIENE COPOLYMER 11.100% 11.100% 11.100% OILY DISPERSION 11.074% 11.074% 11.074% SILICA SILYLATE 3% 3% 3% ISODODECANE 37% 36.875% 35.525% C8-9 ISOPARAFFIN 33.300% 33.300% 33.300% SILICONE ELASTOMER 4.500% 4.500% 4.500% TITANIUM DIOXIDE - 0.109% 1.085% IRON OXIDE, RED - 0.003% 0.026% IRON OXIDE, BLACK - 0.001% 0.007% IRON OXIDE, YELLOW - 0.008% 0.083% NYLON-12 - 0.030% 0.30% Total 700.000% 700.000% 700.000% Transparency 84.6 79.01 43.00 13.59 86.03 Turbidity 96.7 96.4 103 103 74.4 Homogenization strength 35.03 40.95 118.25 460.34 31.12 Bleaching strength 15.18 20.98 35.10 28.91 13.93 Effectiveness / duration in pores +++ / +++ ++ / + Effectiveness / duration in concealing blemishes +++ / +++ -I-+ / ++

[00148] The films were evaluated as described above. Ex. 12a, without pigment, shows a high soft focus effect and a high matte effect to conceal pores. The film is long-lasting. Ex. 12b, with pigments, shows that the blurring and whitening strength is increased, and Ex. 12c, with ten times more pigments, shows even greater blurring and whitening for a greater soft focus effect, demonstrating a strong ability to conceal prominent skin imperfections such as pimples. Both Ex. 12b and Ex. 12c films are long-lasting. All of Ex. 12a, 12b, and 12c show better results in concealing and obscuring skin imperfections, while having a longer duration than that of comparative commercial formulations.

[00149] The results in Table 12 demonstrate that without pigment, the films have a soft-focus effect and are long-lasting with an ability to obscure skin imperfections, and with pigment, the films have a strong ability to conceal skin imperfections while Petition 870170053980, dated 07 / 28 / 2017, pages 47 / 56 / 41, remains pending for a long time.

Claims

1. Skin stiffening composition, characterized in that it comprises: a. at least one thermoplastic elastomer chosen from block copolymers of amorphous styrene hydrocarbons and hydrocarbon monomers containing 2 to 5 carbon atoms and comprising one or two ethylenic unsaturations and having a first Tg below 0°C and a second Tg above 25°C; b. at least one film-forming adhesive polymer chosen from C1-C4 alkyl methacrylate polymer particles stabilized in a non-aqueous dispersion, wherein the film-forming adhesive polymer is present in an amount ranging from 5% to 20% by weight relative to the total weight of the composition; c. at least one filler; d. at least one humectant comprising glycerin, wherein the humectant is present in an amount ranging from 11% to 20% by weight, relative to the total weight of the composition; and e.water, wherein the ratio of at least one thermoplastic elastomer to at least one film-forming adhesive polymer is in the range of 5:1 to 1:5, and wherein the skin stiffening composition forms a film having a Young's Modulus greater than 100 kPa.

2. Skin stiffening composition according to claim 1, characterized in that at least one thermoplastic elastomer is chosen from: - diblock copolymers chosen from styrene-ethylene / propylene copolymers, styrene-ethylene / butadiene copolymers, styrene-ethylene / butylene copolymers, styrene-butadiene copolymers or styrene-isoprene copolymers; - triblock copolymers chosen from styrene-ethylene / propylene-styrene copolymers, styrene-ethylene / butadiene-styrene copolymers, styrene-isoprene-styrene copolymers, or styrene-butadiene-styrene copolymers; and - mixtures thereof.

3. Skin stiffening composition according to claim 1, characterized in that at least one adhesive polymer is chosen from polymeric particles comprising 80% to 100% by weight of C1-C4 alkyl (meth)acrylate and 0% to 20% by weight of ethylenically unsaturated acid monomer of C1-C4 alkyl (methacrylate) polymer in an oily dispersion.

4. Skin-tightening composition according to claim 3, characterized in that the polymer of the particles is chosen from: - polymers consisting of one or more C1-C4 alkyl (methacrylate) polymers and - polymers consisting essentially of a C1-C4 (meth)acrylate copolymer and (meth)acrylic acid or maleic anhydride.

5. Skin stiffening composition according to claim 4, characterized in that the C1-C4 alkyl (methacrylate) polymer is selected from methyl(meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate and tert-butyl (meth)acrylate polymers.

6. Skin-hardening composition according to claim 3, characterized in that the oil is isododecane.

7. Skin stiffening composition according to claim 1, characterized in that at least one filler is chosen from fillers having a particle size greater than 100 nm and / or a specific surface area greater than 200 m2 / g.

8. Skin stiffening composition according to claim 1, characterized in that at least one filler is chosen from silica particles.

9. Skin stiffening composition according to claim 8, characterized in that at least one filler is chosen from hydrophobic silica aerogel particles, optionally surface modified with trimethylsilyl groups.

10. Skin-tightening composition according to claim 1, characterized in that it comprises at least one solvent chosen from solvents having a vapor pressure at room temperature (25°C) greater than 1000 Pa, optionally chosen from volatile hydrocarbon-based oils and volatile silicone oils.

11. Skin-tightening composition according to claim 10, characterized in that at least one solvent is chosen from branched C8 to C16 alkanes, C8 to C16 isoalkanes, isododecane, isodecane, isohexadecane, octamethyltetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane and mixtures thereof.

12. Skin-tightening composition according to claim 1, characterized in that it comprises at least one additional component chosen from silicone elastomers and colorants.

13. Skin stiffening composition according to claim 1, characterized in that at least one thermoplastic elastomer, at least one adhesive polymer and at least one filler are present in a combined amount greater than 10% by weight, preferably greater than 15% by weight, relative to the weight of the composition. Petition 870210093071, dated 07 / 10 / 2021, page 14 / 15 4 / 4 14. Skin stiffening composition according to claim 1, characterized in that the composition has a G* consistency greater than 100 Pa (at 10% strength) and a phase angle below 45°.

15. Sun care film formed from the composition as defined in any one of claims 1 to 14, characterized in that the film has a Young's modulus greater than 500 kPa.

16. Sun protection film according to claim 15, characterized in that the film has a Young's modulus greater than 1000 kPa.

17. A method for improving the appearance of the skin, characterized in that said method comprises forming a film on the skin by applying the composition as defined in any one of claims 1 to 14 to the skin, wherein the Young's modulus of the film formed on the skin is greater than 500 kPa.

18. Method according to claim 17, characterized in that the Young's modulus of the film is greater than 1000 kPa.