Skin external composition

Abstract

To provide a cosmetic that can lift the skin applied with the cosmetic and preserve the lifted state.SOLUTION: A skin external composition contains cellulose nanofibers and polyhydric alcohols, where the polyhydric alcohols include glycerol and / or diglycerol, and the total content of the polyhydric alcohols is 8-35 mass% of the entire composition.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a composition for external use on the skin. [Background technology]

[0002] It is known that skin tissue and muscle tissue deteriorate due to aging and exposure to ultraviolet rays, causing the skin to lose firmness and elasticity, resulting in wrinkles and sagging. In recent years, it has been proposed to eliminate wrinkles and sagging skin by imparting a skin lifting (lifting) function to the cosmetic film. For example, a technique is known in which a film-forming agent such as pullulan is blended into a cosmetic product, and the coating film (cosmetic film) formed by the cosmetic product shrinks when it dries, resulting in a lifting effect (Patent Document 1, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-084848 A Summary of the Invention [Problem to be solved by the invention]

[0004] The lift-up effect of conventional cosmetics was not necessarily sufficient. The inventors of the present invention focused on the fact that the adhesiveness of the cosmetic film to the skin and the shrinkage caused by the drying of the cosmetic film were insufficient as the reason for this. They also focused on the fact that if the cosmetic film is too hard, it is easily torn and the skin after application has an unnatural impression. In light of these circumstances, an objective of the present invention is to provide a cosmetic preparation that can lift the skin to which it is applied and maintain that lift. [Means for solving the problem]

[0005] As a result of intensive research conducted by the inventors to solve the above-mentioned problems, the inventors discovered that when a topical skin composition containing a combination of cellulose nanofibers and a large amount of glycerin and / or diglycerin is applied, it is possible to form a cosmetic film that adheres well to the skin, shrinks favorably as it dries, and is flexible and tear-resistant, thereby completing the present invention.

[0006] That is, the present invention is as follows. [1] A composition for external use on the skin, comprising cellulose nanofibers and a polyhydric alcohol, the polyhydric alcohol comprising glycerin and / or diglycerin, and a total content of the polyhydric alcohol in the composition being 8 to 35% by mass. [2] The composition described in [1], wherein the polyhydric alcohol is glycerin. [3] The composition according to [1] or [2], wherein the content of the cellulose nanofibers is 0.01 to 1 mass% of the total composition. [4] The composition according to any one of [1] to [3], wherein the mass ratio of the cellulose nanofiber content to the total polyhydric alcohol content is 1:40 to 1:200. [5] The composition according to any one of [1] to [4], which is a cosmetic. Effect of the Invention

[0007] According to the present invention, it is possible to form a film that adheres firmly to the skin, shrinks as it dries, and is flexible and resistant to tearing. Such a film can impart a lifting sensation to the skin, and is therefore suitable for use in external skin compositions such as cosmetics. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The composition for external use on skin of the present invention essentially contains cellulose nanofibers and a polyhydric alcohol.

[0009] Cellulose nanofiber refers to crystalline cellulose in a fibrous form. The fiber thickness of the cellulose nanofiber is not particularly limited, but may be one that is typically incorporated into cosmetics, and may have, for example, a number average fiber diameter of preferably 2 to 500 nm, more preferably 2 to 150 nm. The aspect ratio of the cellulose nanofiber is not particularly limited, but may be one that is typically incorporated into cosmetics, and may have, for example, an aspect ratio of preferably 50 or more, more preferably 100 or more.

[0010] As the cellulose nanofiber, commercially available products can be used, for example, "LEOCRYSTA C-2SP" (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.).

[0011] In the composition of the present invention, the content of cellulose nanofibers is not particularly limited, and may be, for example, 0.01% by mass or more, 0.025% by mass or more, or 0.05% by mass or more, or 1% by mass or less, 0.5% by mass or less, or 0.25% by mass or less, or any compatible combination thereof, relative to the entire composition. The content of cellulose nanofibers may be 0.01 to 1% by mass, 0.025 to 0.5% by mass, or 0.05 to 0.25% by mass, relative to the entire composition. By using the cosmetic composition in such a range, a cosmetic film is formed in which the fibers are entangled, and a cosmetic film having desirable flexibility can be formed, which gives rise to shrinkage that provides a desirable lift-up effect when dried.

[0012] The polyhydric alcohol in the composition of the present invention includes glycerin and / or diglycerin. As long as the composition contains glycerin and / or diglycerin, it may contain other polyhydric alcohols.

[0013] In the composition of the present invention, the total content of polyhydric alcohols is 8% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more, and 35% by mass or less, preferably 30% by mass or less, more preferably 25% by mass or less, or any compatible combination thereof, based on the total composition. Also, the total content of polyhydric alcohols may be 8 to 35% by mass, preferably 10 to 30% by mass, more preferably 15 to 25% by mass, based on the total composition. In addition, the polyhydric alcohol is preferably glycerin and / or diglycerin, and is preferably contained in an amount of 10% by mass or more, more preferably 15% by mass or more, and even more preferably 20% by mass or more, and is preferably 35% by mass or less, preferably 30% by mass or less, and even more preferably 25% by mass or less, based on the total composition, and may be any combination that is not contradictory. In addition, the content of glycerin and / or diglycerin may be preferably 10 to 35% by mass, more preferably 15 to 30% by mass, and even more preferably 20 to 25% by mass, based on the total composition. Furthermore, the mass ratio of the cellulose nanofiber content to the total polyhydric alcohol content is preferably 1:40 to 1:200. By using the cellulose nanofibers in this range, a cosmetic film that adheres well to the skin can be formed, and the cosmetic film can be made to have shrinkage that provides a desirable lift-up effect when dried, and also has desirable flexibility.

[0014] The cosmetic film formed by the composition of the present invention has the property of being sufficiently adherent to the skin. In addition, the composition of the present invention preferably shrinks as it dries, so that it can lift the skin and maintain that lifting effect. In addition, the cosmetic film formed by the composition of the present invention has a soft Because it is soft and tear-resistant, it gives the applied skin a natural look. Therefore, the composition of the present invention can be preferably used for lifting.

[0015] The formulation of the topical skin composition of the present invention is not particularly limited, but from the viewpoint of dispersibility of cellulose nanofibers, it is preferable that the composition contains an aqueous medium, and examples of the formulation include aqueous formulations such as lotions, emulsion formulations such as milk lotions and creams, gel formulations, and pack (mask) formulations. The skin external composition is preferably in the form of a cosmetic or a quasi-drug, and more preferably includes skin care cosmetics, sunscreen cosmetics, and makeup cosmetics. Preferred examples of skin care cosmetics include lotions, milky lotions, creams, essences, beauty essences, cleansers, etc. Preferred examples of makeup cosmetics include makeup bases, foundations, concealers, BB creams, CC creams, mascaras, eye colors, blushes, eyebrow colors, etc. The area to which the topical skin composition is applied is not particularly limited, but includes areas where a skin lifting effect is desired, such as the face, neck, décolleté, abdomen, buttocks, and legs, and more preferably the face.

[0016] The composition of the present invention may contain any other components that are generally used in cosmetics, provided that the effects of the present invention are not impaired. Examples of such optional components include oils, alcohols, ethers, powders, clay minerals, moisturizers, surfactants, sequestering agents, pearlescent agents, amino acids, organic amines, polymer emulsions, pH adjusters, vitamins, antioxidants, preservatives, water-soluble polymers, fragrances, and various active ingredients.

[0017] Examples of oils include silicone oils, polar oils, natural oils, and hydrocarbons.

[0018] Silicone oils include dimethylpolysiloxane (dimethicone), cyclopentasiloxane, decamethylcyclopentasiloxane, caprylyl methicone, trimethylsiloxysilicate, (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / phenylvinyl Ludimethicone crosspolymer, etc.

[0019] As polar oils, synthetic ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearyl acid, ethylene glycol di-2-ethylhexyl acid, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glyceryl di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexyl acid, trimethylolpropane triisostearate, pentaneerythritol tetra-2-ethylhexyl acid, and glyceryl tri-2-ethylhexanoate. , trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleic acid oil, cetostearyl alcohol, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester , di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, isononyl isononanoate, ethyl acetate, butyl acetate, amyl acetate, triethyl citrate, octyl methoxycinnamate, 2-ethylhexyl paramethoxycinnamate, diethyl Aminohydroxybenzoyl hexyl benzoate and the like.

[0020] Examples of natural oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, Chinese giri oil, Japanese tung oil, jojoba oil, germ oil, sunflower oil, triglycerides, glyceryl trioctanoate, and glyceryl triisopalmitate.

[0021] Examples of the hydrocarbon oil include isododecane, isohexadecane, squalane, hydrogenated poly(C6-12) olefin, and hydrogenated polyisobutene.

[0022] Examples of alcohols other than glycerin and diglycerin include monohydric alcohols such as cetanol, batyl alcohol, behenyl alcohol, palmitoleyl alcohol, heptadecanol, 1-heptadecanol, stearyl alcohol, isostearyl alcohol, elaidyl alcohol, oleyl alcohol, linoleyl alcohol, elaidolinoleyl alcohol, linolenyl alcohol, elaidolinolenyl alcohol, ricinoleyl alcohol, nonadecyl alcohol, arachidyl alcohol, heneicosanol, behenyl alcohol, and erucyl alcohol; ethylene glycol, 1,3-butylene glycol, trimethylene glycol, and the like. Dihydric alcohols such as glycol, 1,2-butylene glycol, propylene glycol, dipropylene glycol, propanediol, 1,2-pentanediol, 3-methyl-1,3-butanediol, tetramethylene glycol, 2,3-butylene glycol, pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, and octylene glycol; trihydric alcohols such as trimethylolpropane; tetrahydric alcohols such as pentaerythritol; pentahydric alcohols such as xylitol; polyhydric alcohol polymers such as triglycerin, tetraglycerin, and polyglycerin; sugar alcohols such as starch decomposition sugar reduction alcohols; polyglycerin; alcohol alkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono 2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol isopropyl ether, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, and dipropylene glycol butyl ether; glycerin monoalkyl ethers such as xyl alcohol, selachyl alcohol, and batyl alcohol; Alcohol polymers such as diethylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, and polyethylene glycol; Glysolid; tetrahydrofurfuryl alcohol; POE-tetrahydrofurfuryl alcohol; POP-butyl ether; POP·POE-butyl ether; tripolyoxypropylene glycerin ether; POP-glycerin ether; POP-glycerin ether phosphate; POP·POE-pentaneerythritol ether, etc.

[0023] As for ethers, in addition to those corresponding to the above alcohols, Ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene Examples of the ethylene glycol monomethyl ether acetate include ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diadipate, ethylene glycol disuccinate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, and propylene glycol monophenyl ether acetate.

[0024] The powder may be spherical, needle-like, plate-like, or the like, and its shape is not particularly limited. Examples of the powder include inorganic powders (e.g., talc, kaolin, mica, sericite, white mica, gold mica, synthetic mica, red mica, black mica, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, tungstate metal salts, magnesium, silica, alumina, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, boron nitride, etc.); organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, polymethyl (meth)acrylate powder, polystyrene powder, styrene and acrylic acid copolymer resin powder, silicone resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); metal soaps (e.g., methyl methacrylate powder, polymethyl methacrylate powder, cellulose powder, etc.); Zinc stearate, calcium palmitate, aluminum stearate); inorganic white pigment (e.g., titanium dioxide, zinc oxide, etc.); inorganic red pigments (e.g., iron oxide (red oxide), iron titanate, etc.); inorganic brown pigments (e.g., gamma-iron oxide, etc.); inorganic yellow pigments (e.g., yellow iron oxide, ocher, etc.); inorganic black pigments (e.g., black iron oxide, low-order titanium oxide, etc.); inorganic purple pigments (e.g., mango violet, cobalt violet, etc.); inorganic green pigments (e.g., chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine, Prussian blue, etc.); pearl pigments (e.g., titanium oxide coated mica, titanium oxide coated bismuth oxychloride, titanium oxide coated talc, colored titanium oxide coated mica, bismuth oxychloride, fish scales, foil, etc.); metal powder pigments (e.g., aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium or aluminum lake (e.g., organic pigments such as Red 201, Red 202, Red 204, Red 205, Red 220, Red 226, Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, and Blue 404, Red 3, Red 104, Red 106, Red 227, Red 230, Red 401, Red 505, Orange 205, Yellow 4, Yellow 5, Yellow 202, Yellow 203, Green 3, and Blue 1, etc.); natural pigments (e.g., chlorophyll, β-carotene, etc.), etc.

[0025] Examples of clay minerals include hectorite, montmorillonite, saponite, hectorite, bentonite, smectite, etc. Also, organically modified clay minerals obtained by treating these with organic cations may be used, such as dimethyl distearyl ammonium hectorite (quaternium-18 hectorite, etc.), dimethyl distearyl ammonium bentonite (quaternium-18 bentonite, quaternium-90 bentonite, etc.), benzyl dimethyl stearyl ammonium hectorite, dioctadecyl dimethyl ammonium salt modified montmorillonite, octadecyl dimethyl benzyl ammonium salt modified montmorillonite, dihexadecyl dimethyl ammonium salt modified montmorillonite, dimethyl distearyl ammonium smectite, etc.

[0026] Examples of moisturizing agents include chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, and sodium lactate. Examples of such active ingredients include dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerol (EO)PO adduct, Rosa rugosa extract, Achillea millefolium extract, and Melilot extract.

[0027] The surfactants include anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants.

[0028] Examples of anionic surfactants include fatty acid soaps (e.g., sodium laurate, sodium palmitate, etc.); higher alkyl sulfates (e.g., sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfates (e.g., POE triethanolamine lauryl sulfate, sodium POE lauryl sulfate, etc.); N-acyl sarcosinates (e.g., sodium lauroyl sarcosinate, etc.); higher fatty acid amide sulfonates (e.g., sodium N-myristoyl-N-methyl taurine, sodium coconut oil fatty acid methyl tauride, sodium lauryl methyl tauride, etc.); phosphates (sodium POE oleyl ether phosphate, sodium POE stearyl ether phosphate, etc.); sulfosuccinates (e.g., sodium di-2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamide polyoxyethylene sulfosuccinate, sodium lauryl polypropylene glycol ... sodium citrate, etc.); alkylbenzene sulfonates (e.g., sodium linear dodecylbenzene sulfonate, triethanolamine linear dodecylbenzene sulfonate, linear dodecylbenzene sulfonic acid, etc.); higher fatty acid ester sulfate salts (e.g., sodium hydrogenated coconut oil fatty acid glycerin sulfate, etc.); N-acyl glutamates (e.g., monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, monosodium N-myristoyl-L-glutamate, etc.); sulfated oils (e.g., turmeric oil, etc.); POE alkyl ether carboxylic acids; POE alkyl allyl ether carboxylates; α-olefin sulfonates; higher fatty acid ester sulfonates; secondary alcohol sulfate salts; higher fatty acid alkylolamide sulfate salts; sodium lauroyl monoethanolamide succinate; ditriethanolamine N-palmitoyl aspartate; sodium caseinate, etc.

[0029] Examples of the cationic surfactant include alkyl trimethyl ammonium salts (e.g., stearyl trimethyl ammonium chloride, lauryl trimethyl ammonium chloride, etc.); alkyl pyridinium salts (e.g., cetyl pyridinium chloride, etc.); distearyl dimethyl ammonium chloride, dialkyl dimethyl ammonium salts; poly(N,N'-dimethyl- 3,5-Methylenepiperidinium;Alkyl quaternary ammonium salts;Alkyl dimethyl benzyl Examples of the alkylaminoethyl ammonium salt include benzyl ammonium salts; alkyl isoquinolinium salts; dialkyl morphonium salts; POE alkyl amines; alkyl amine salts; polyamine fatty acid derivatives; amyl alcohol fatty acid derivatives; benzalkonium chloride; and benzethonium chloride.

[0030] Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.); betaine-based surfactants (e.g., 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryl dimethylaminoacetic acid betaine, alkyl betaine, amido betaine, sulfobetaine, etc.).

[0031] Examples of nonionic surfactants include polyether-modified silicones (e.g., polyethylene glycol-10 dimethicone, polyethylene glycol-12 dimethicone, etc.); polyglycerin-modified silicones (e.g., polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 polydimethylsiloxyethyl dimethicone, etc.); sorbitan fatty acid esters (e.g., sorbitan monooleate, sorbitan monostearate, sorbitan mono isostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, diglycerol sorbitan penta-2-ethylhexyl acid, diglycerol sorbitan tetra-2-ethylhexyl acid, etc.); glycerin fatty acids (e.g., glycerin monocottonseed oil fatty acid, glycerin monoerucate, glycerin sesquioleate, glycerin monostearate, α,α'-oleic acid pyroglutamic acid glycerin, glycerin monostearate malate, etc.); propylene glycol fatty acid esters (e.g., propylene glycol monostearate, etc.); POE castor oil / hydrogenated castor oil derivatives (POE castor oil, POE hydrogenated castor oil, etc.); and non-hydrophilic nonionic surfactants such as glycerin alkyl ethers.Also, polyglycerol fatty acid esters (e.g., polyglyceryl monooleate, polyglyceryl monostearate, etc.); POE sorbitan fatty acid esters (e.g., POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan tetraoleate, etc.); POE sorbit fatty acid esters (e.g., POE sorbitan monolaurate, POE sorbit monooleate, POE sorbit pentaoleate, POE sorbit monostearate, etc.); POE glycerin fatty acid esters (e.g., POE monooleates such as POE glycerin monostearate, POE glycerin monoisostearate, POE glycerin triisostearate, etc.); POE fatty acid esters (e.g., POE distearate, POE monodioleate, ethylene glycol distearate, etc.); POE alkyl ethers (e.g., POE lauryl ether, POE oleyl ether, POE stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE cholestanol ether, etc.); POE alkyl phenyl ethers (e.g., POE nonylphenyl ether, etc.); Pluronic types (e.g., Pluronic (registered trademark), etc.); POE·POP alkyl ethers (e.g., POE·POP cetyl ether, POE·POP-2-decyltetradecyl ether, POE·POP monobutyl ether, POE·POP hydrogenated lanolin, POE·POP glycerin ether, etc.); tetra POE·tetraPOP ethylenediamine condensates (e.g., tetra. POE castor oil hydrogenated castor oil derivatives (e.g., POE castor oil, POE hydrogenated castor oil, POE hydrogenated castor oil monoisostearate, POE hydrogenated castor oil triisostearate, POE hydrogenated castor oil monopyroglutamic acid monoisostearate diester, POE hydrogenated castor oil maleic acid, etc.); POE beeswax / lanolin derivatives (e.g., POE sorbitol beeswax, etc.); alkanolamides (e.g., coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE propylene glycol fatty acid esters; POE alkylamines; POE fatty acid amides; sucrose fatty acid esters; alkyl glucosides; alkyl ethoxydimethylamine oxides; and hydrophilic nonionic surfactants such as trioleyl phosphate.

[0032] Examples of sequestering agents include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, and trisodium ethylenediaminehydroxyethyltriacetate.

[0033] Examples of pearlescent agents include glycol distearate and titanium mica.

[0034] Examples of the amino acid include neutral amino acids (e.g., threonine, cysteine, etc.); basic amino acids (e.g., hydroxylysine, etc.); and the like. Examples of the amino acid derivatives include sodium acyl sarcosine (sodium lauroyl sarcosine), sodium acyl sarcosine, sodium lauro ... Glutamate, sodium acyl β-alanine, glutathione, pyrrolidone carboxone Acids and the like.

[0035] Examples of the organic amine include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol.

[0036] Examples of polymer emulsions include acrylic resin emulsions, polyethyl acrylate emulsions, acrylic resin liquids, polyacrylic alkyl ester emulsions, polyvinyl acetate resin emulsions, and natural rubber latex.

[0037] Examples of pH adjusters include buffers such as lactic acid-sodium lactate, citric acid-sodium citrate, and succinic acid-sodium succinate, and are usually used to adjust the pH of the internal phase (aqueous component).

[0038] Vitamins include, for example, vitamins A, B1, B2, B6, C, E and their derivatives. , pantothenic acid and its derivatives, biotin, etc.

[0039] Examples of antioxidants include tocopherols, dibutylhydroxytoluene (BHT), butylhydroxyanisole, pyrosulfite, gallic acid esters, phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.

[0040] Examples of preservatives include parabens and phenoxyethanol.

[0041] The water-soluble polymers include those other than crystalline cellulose, such as plant-based polymers (e.g., gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), algae colloid (ca Extract of sō), starch (rice, corn, potato, wheat), glycyrrhizin natural water-soluble polymers such as microbial polymers (e.g., dextran, succinoglucan, pullulan, etc.); and animal polymers (e.g., collagen, casein, albumin, gelatin, etc.); semi-synthetic water-soluble polymers such as starch-based polymers (e.g., carboxymethyl starch, methyl hydroxypropyl starch, etc.); cellulose-based polymers (hydroxypropyl methylcellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, ethyl cellulose, hydroxypropyl methylcellulose stearoxy ether, sodium cellulose sulfate, carboxymethyl cellulose, sodium carboxymethyl cellulose, cellulose powder, etc.); alginic acid-based polymers (e.g., sodium alginate, propylene glycol alginate, etc.), etc. Examples of the water-soluble polymer include synthetic water-soluble polymers such as vinyl polymers (e.g., polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, carboxyvinyl polymer, etc.); polyoxyethylene polymers (e.g., polyethylene glycol 20,000, 40,000, 60,000, etc.); acrylic polymers (e.g., sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimine; and cationic polymers. It is preferable that components that undergo cellulase reaction, such as xanthan gum, are not contained in the composition of the present invention.

[0042] Examples of the various active ingredients include anti-inflammatory agents (e.g., salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (e.g., placenta extract, saxifrage extract, arbutin, resorcinol derivatives, etc.); various extracts (e.g., Phellodendron bark, Coptis japonica, Lithospermum root, etc.); , peony, Swertia japonica, birch, sage, loquat, carrot, aloe, mallow, iris, grape, coix seed, loofah, lily, saffron, Cnidium rhizome, Angelica acutiloba, Hypericum perforatum, Ononis, garlic, chili pepper, tangerine, Angelica acutiloba, seaweed, etc.), activators (e.g., royal jelly, photosensitizers, cholesterol derivatives, etc.); blood circulation promoters (e.g., nonyl acid valenylamide, nicotinic acid benzyl ester, nicotinic acid β-butoxyethyl ester, , capsaicin, zingerone, cantharides tincture, ichthammol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandelate, cinnarizine, tolazoline, acetylcholine, verapamil, cepharanthine, γ-oryzanol, etc.); antiseborrheic agents (e.g., sulfur, thianthol, etc.); anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, hypotaurine, glycyrrhetinic acid derivatives, etc.). EXAMPLES

[0043] The present invention will be described in more detail below with reference to examples. However, the present invention is not limited to the following examples as long as it does not depart from the gist of the present invention.

[0044] The components shown in Table 1 were mixed with stirring to prepare compositions of the examples and comparative examples. The coating films formed from each of the prepared compositions were evaluated for adhesion, shrinkage, and flexibility according to the following procedures.

[0045] (1)Adhesion 0.5 g of the composition was dropped onto an artificial leather and dried at 40°C and 17% RH for 24 hours. After making 2 mm-wide lattice-shaped cuts (11 lines vertically and horizontally) into the formed decorative film using a cutter guide, adhesive tape was applied to the decorative film and peeled off. The degree of peeling when peeled off was visually evaluated according to the following criteria. Good: The intersections of the cuts are mostly intact, and the square peeling along the cuts accounts for less than 10% of the total. △: The intersections of the cuts are irregular, and square peeling along the cuts accounts for 10% to less than 50% of the total. ×: Peeling along the cut in a square shape accounts for 50% or more of the entire surface.

[0046] (2) Contractility 0.5 g of the composition was dropped onto artificial leather and dried for 24 hours at 40°C and 17% RH. The formed cosmetic film was fixed to an IMADA digital force gauge and pulled together with the artificial leather at a speed of 20 mm / min using a ZTA-50N, and the load at a displacement of 8 mm was evaluated according to the following criteria. 〇: 5N or more △: 4N or more but less than 5N ×: Less than 4N

[0047] (3) Flexibility evaluation (resistance to tearing of the membrane) 0.5 g of the composition was dropped onto the artificial leather and dried at 40°C and 17% RH for 24 hours. The formed cosmetic film was fixed to an IMADA digital force gauge and pulled together with the artificial leather up to a load of 6 N at a speed of 20 mm / min using a ZTA-50N, three times. The film was then observed using a KEYENCE digital microscope for breaks or twists and evaluated according to the following criteria. ○: No or noticeable cracks, tears, or creases. △: Cracks, tears, and wrinkles are noticeable. ×: Cracks, tears, and creases are clearly present.

[0048] [Table 1] [Industrial Applicability]

[0049] The present invention provides a composition that can firmly adhere to the skin, shrink when dried, and form a flexible film that is not easily broken. The film formed by the composition of the present invention can provide a lifting sensation to the skin, so it is suitable for skin external compositions such as cosmetics intended for anti-aging effects, meets consumer demand, and is very useful industrially.

Claims

1. A composition for external use on the skin containing cellulose nanofibers and a polyhydric alcohol, The polyhydric alcohol includes glycerin and / or diglycerin, The total content of the polyhydric alcohol is 8 to 35% by mass of the entire composition.

2. 2. The composition of claim 1, wherein the polyhydric alcohol is glycerin.

3. The composition according to claim 1, wherein the content of the cellulose nanofibers is 0.01 to 1% by mass of the total composition.

4. The composition according to claim 1, wherein the mass ratio of the cellulose nanofiber content to the total polyhydric alcohol content is 1:40 to 1:

200.

5. The composition according to claim 1 , which is a cosmetic product.

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