External composition for skin

Abstract

To provide a technique for relaxing pressure applied to the skin and suppressing deformation of the skin and skin trouble caused by the deformation.SOLUTION: The skin care composition for external use comprises a thickening polysaccharide, a cellulose-based water-soluble polymer and a polyhydric alcohol and is used for relaxing the pressure to the skin. The thickening polysaccharide is preferably selected from the group consisting of xanthan gum and locust bean gum. The cellulose-based water-soluble polymer is preferably selected from the group consisting of hydroxypropyl methyl cellulose and hydroxyethyl cellulose.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a composition for external use on the skin that is used to relieve pressure on the skin. [Background technology]

[0002] Wrinkles are one of the signs of skin aging and are easily noticeable, significantly affecting the overall appearance of the face. As a result, there is a great deal of interest in wrinkles and how to prevent and improve them. In the past, moisturizing with topical skin preparations containing water-retaining polymers such as mucopolysaccharides and collagen has been used to improve wrinkles, but this alone has not been sufficient to improve wrinkles. Furthermore, recent research has revealed that in addition to aging being an important factor in skin aging symptoms, factors such as dryness, oxidation, glycation, and ultraviolet rays also play a major role, and it is believed that these factors deteriorate fibroblasts, the main cells in the dermis, causing the skin to lose elasticity and resulting in wrinkles. Therefore, efforts are being made to improve deep wrinkles etched into the dermis by using mechanisms such as promoting hyaluronic acid synthesis, inhibiting elastase activity, and promoting collagen synthesis and inhibiting its degradation, in an attempt to restore skin elasticity in fibroblasts. On the other hand, shallow wrinkles that appear on the epidermis are caused by deformation of the epidermis due to bending stimuli applied to the stratum corneum. Epidermal deformation can occur not only due to everyday changes in facial expression, but also due to pressure on the skin when wearing a mask or when a pillow touches the face while sleeping. Unlike deep wrinkles etched in the dermis, such epidermal bending wrinkles have not received much attention until now, and the only way to deal with them has been to moisturize, with no way to prevent them.

[0003] A measure has been proposed to protect the skin from external physical and chemical stimuli by applying a specific coating to the skin for a certain period of time (Patent Document 1). However, this method is intended to protect the skin from stimuli caused by substances that adhere to the skin from the outside or from stimuli caused by friction from contacting objects, and is different from protection from pressure on the skin and the resulting deformation of the epidermis. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7337897 Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a technology for alleviating pressure on the skin and suppressing deformation of the skin and the skin troubles that may result from such deformation. [Means for solving the problem]

[0006] As a result of intensive research to solve the above problems, the present inventors discovered that pressure on the skin can be alleviated by forming a film on the skin that is both flexible and contractile. They then came up with the idea that such a film can be formed by combining a thickening polysaccharide with a cellulose-based water-soluble polymer, and completed the present invention.

[0007] That is, the present invention is as follows. [1] A composition for external use on the skin containing a thickening polysaccharide, a water-soluble cellulose polymer, and a polyhydric alcohol, A composition used to relieve pressure on the skin. [2] The composition described in [1], wherein the thickening polysaccharide is selected from the group consisting of xanthan gum and locust bean gum. [3] The composition according to [1] or [2], wherein the cellulose-based water-soluble polymer is selected from the group consisting of hydroxypropyl methylcellulose and hydroxyethyl cellulose. [4] The composition according to any one of [1] to [3], wherein the weight ratio of the content of the thickening polysaccharide to the content of the water-soluble cellulose polymer is 1:2 to 15:1. [5] The composition according to any one of [1] to [4], which is a cosmetic. [Effects of the Invention]

[0008] The present invention can relieve pressure on the skin, thereby preventing skin deformation and associated skin problems such as wrinkles, and provides consumers with a new cosmetic option. [Brief explanation of the drawings]

[0009] [Figure 1] A diagram showing how the skin deforms when pressure is applied, with and without a coating film. DETAILED DESCRIPTION OF THE INVENTION

[0010] The composition for external use on skin of the present invention contains a thickening polysaccharide, a water-soluble cellulose polymer, and a polyhydric alcohol.

[0011] The thickening polysaccharide imparts flexibility to the coating film formed by the composition. The thickening polysaccharide is not particularly limited, but examples thereof include microbial polymers such as xanthan gum, dextran, succinoglucan, and pullulan; gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, tara gum, carrageenan, pectin, agar, quince seed (marmelo), algae colloid (cassow extract), and starch ( Rice, corn, potato, wheat), plant-based polymers such as glycyrrhizinic acid Among these, xanthan gum and locust bean gum are more preferred.

[0012] The thickening polysaccharides to be used are not particularly limited and may have a molecular weight that is typically used in cosmetics. The content of the thickening polysaccharide in the composition of the present invention is preferably 0.01 to 1.2 wt %, more preferably 0.05 to 0.6 wt %, and even more preferably 0.1 to 0.3 wt % of the total composition.

[0013] The cellulose-based water-soluble polymer imparts shrinkage to the coating film formed from the composition. The cellulose-based water-soluble polymer is not particularly limited, but examples thereof include methyl cellulose, ethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose stearoxy ether, sodium cellulose sulfate, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, cellulose powder, etc. Among these, hydroxypropyl methyl cellulose and hydroxyethyl cellulose are more preferred.

[0014] The cellulose-based water-soluble polymer is not particularly limited, and any polymer having a molecular weight that is typically incorporated into cosmetics can be used. The content of the cellulose-based water-soluble polymer in the composition of the present invention is preferably 0.01 to 1.0% by weight, more preferably 0.01 to 0.5% by weight, and even more preferably 0.01 to 0.25% by weight of the total composition.

[0015] In the composition of the present invention, the weight ratio of the content of the thickening polysaccharide to the content of the water-soluble cellulose polymer is preferably 1:2 to 15:1, more preferably 1:1 to 10:1. By combining the two in this range, it is possible to form a coating film having an appropriate balance of flexibility and shrinkage.

[0016] The polyhydric alcohol imparts flexibility to the coating film formed from the composition. The polyhydric alcohol is not particularly limited, but examples thereof include dihydric alcohols such as ethylene glycol, 1,3-butylene glycol, trimethylene 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 glycerin and 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 hydrolysis sugar reduced alcohols; and polyglycerin. Of these, 1,3-butylene glycol and glycerin are more preferred.

[0017] The content of the polyhydric alcohol in the composition of the present invention is preferably 1 to 40% by weight, more preferably 3 to 25% by weight, and even more preferably 5 to 20% by weight of the total composition.

[0018] The composition of the present invention, by combining a thickening polysaccharide with a cellulose-based water-soluble polymer, can form a coating film that is both flexible and shrinkable. Such a coating film has appropriate physical properties, being neither too hard nor too soft and tear-resistant, and its presence on the skin reduces the transmission of stress to the skin. This reduces pressure on the skin and suppresses deformation of the skin (especially the epidermis) (Figure 1). As a result, suppressing deformation of the skin (epidermis) is expected to prevent future skin problems such as wrinkles that may arise due to skin deformation.

[0019] Therefore, the composition of the present invention can be preferably applied to external skin preparations. The topical skin preparation is preferably in the form of a cosmetic or quasi-drug, and more preferably a skin care cosmetic, a sunscreen cosmetic, or a makeup cosmetic. The area to which the topical skin composition of the present invention is applied is not particularly limited, but is usually the face, limbs, neck, or décolleté.

[0020] Examples of dosage forms of the external skin composition include, but are not limited to, lotion dosage forms, emulsion dosage forms such as lotions and creams, oil dosage forms, gel dosage forms, packs, cleansers, and the like. The external skin composition may be either a leave-on type or a leave-off type.

[0021] The composition of the present invention can be produced according to a conventional method.

[0022] The cosmetic of the present invention may optionally contain other ingredients commonly used in cosmetics, provided that the effects of the present invention are not impaired. Examples of such optional ingredients include oils, other alcohols, ethers, powders, humectants, surfactants, sequestering agents, pearlescent agents, amino acids, organic amines, polymer emulsions, pH adjusters, vitamins, antioxidants, preservatives, other water-soluble polymers, fragrances, and various active ingredients.

[0023] Examples of oil agents include silicone oil, polar oil, natural oil, and hydrocarbon oil.

[0024] Silicone oils include dimethylpolysiloxane (dimethicone), cyclopentasiloxane, decamethylcyclopentasiloxane, caprylyl methicone, trimethylsiloxysilicate, (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / phenyl vinyl Dimethicone crosspolymer, etc.

[0025] Polar oils include cetyl ethylhexanoate, octyldodecyl stearoyloxystearate, triisostearin, polyglyceryl-2 triisostearate, triethylhexanoin, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, and isocetyl stearate. ethanol, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexylate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glyceryl di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexylate, trimethylolpropane triisostearate, pentaneerythritol tetra-2-ethylhexylate, Glyceryl 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 adipate ester oils such as 2-heptylundecyl, 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, and diethylamino hydroxybenzoyl hexyl benzoate.

[0026] 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, camellia oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, Japanese kaya oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, germ oil, sunflower oil, triglycerin, glyceryl trioctanoate, and glyceryl triisopalmitate.

[0027] Examples of hydrocarbon oils include isododecane, isohexadecane, squalane, hydrogenated poly(C6-12)olefin, and hydrogenated polyisobutene.

[0028] Other alcohols include, for example, monohydric alcohols such as cetanol, batyl alcohol, behenyl alcohol, palmitoleic 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 monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono 2-methylhexyl ether alcohol alkyl ethers such as ethylene glycol isoamyl ether, ethylene glycol benzyl ether, and ethylene glycol isopropyl ether; alcohol alkyl ethers such as 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, and tetraethylene glycol; Examples include glycerol; 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.

[0029] Examples of ethers include those corresponding to the above alcohols, as well as ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol methyl ethyl ether, ethylene glycol monomethyl ether acetate, 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.

[0030] The powder may be spherical, needle-like, plate-like, or any other suitable shape, and examples thereof include inorganic powders (e.g., talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, lepidolite, biotite, 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-acrylic acid copolymer resin powder, silicone resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); metal soaps (e.g., mica, silica, alumina, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, boron nitride, 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 iron oxide), iron titanate, etc.); inorganic brown pigments (e.g., γ-iron oxide, etc.); inorganic yellow pigments (e.g., yellow iron oxide, ochre, 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 scale foil, etc.); metal powder pigments (e.g., aluminum powder, copper organic pigments such as zirconium, barium, or aluminum lakes (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); natural pigments (e.g., chlorophyll, β-carotene, etc.); and organically modified clay minerals (e.g., organically modified hectorite, etc.).

[0031] Examples of moisturizing agents include chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO)PO adduct, Rosa robur extract, yarrow extract, and melilot extract.

[0032] Surfactants include anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants.

[0033] 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, POE sodium lauryl sulfate, etc.); N-acyl sarcosinates (e.g., sodium lauroyl sarcosinate, etc.); higher fatty acid amide sulfonates (e.g., sodium N-myristoyl-N-methyl taurate, sodium coconut oil fatty acid methyl tauride, sodium lauryl methyl tauride, etc.); phosphate salts (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 sulfosuccinate, etc.); sodium carboxylate, etc.); alkylbenzenesulfonates (e.g., sodium linear dodecylbenzenesulfonate, triethanolamine linear dodecylbenzenesulfonate, linear dodecylbenzenesulfonic acid, etc.); higher fatty acid ester sulfate salts (e.g., sodium hydrogenated coconut oil fatty acid glycerin sulfate, etc.); N-acylglutamates (e.g., monosodium N-lauroylglutamate, disodium N-stearoylglutamate, monosodium N-myristoyl-L-glutamate, etc.); sulfated oils (e.g., turmeric oil, etc.); POE alkyl ether carboxylic acids; POE alkyl allyl ether carboxylate salts; α-olefin sulfonates; higher fatty acid ester sulfonates; secondary alcohol sulfate salts; higher fatty acid alkylolamide sulfate salts; sodium lauroylmonoethanolamide succinate; ditriethanolamine N-palmitoyl aspartate; sodium caseinate, etc.

[0034] Examples of cationic surfactants include alkyltrimethylammonium salts (e.g., stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); alkylpyridinium salts (e.g., cetylpyridinium chloride, etc.); distearyldimethylammonium chloride, dialkyldimethylammonium salts; poly(N,N'-dimethyl- 3,5-Methylenepiperidinium; Alkyl quaternary ammonium salts; Alkyl dimethyl benzoates Examples of the alkylamine salt include benzylammonium salts; alkylisoquinolinium salts; dialkylmorphonium salts; POE alkylamines; alkylamine salts; polyamine fatty acid derivatives; amyl alcohol fatty acid derivatives; benzalkonium chloride; and benzethonium chloride.

[0035] Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (e.g., 2-undecyl 2-methylpropional). decyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.); betaine surfactants (for example, 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkyl betaine, amido betaine, sulfobetaine, etc.).

[0036] 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 monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, penta-2- diglycerol sorbitan ethylhexylate, diglycerol sorbitan tetra-2-ethylhexylate, etc.); glycerin fatty acids (e.g., glyceryl monocottonseed oil fatty acid, glyceryl monoerucate, glyceryl sesquioleate, glyceryl monostearate, glyceryl α,α'-oleate pyroglutamate, glyceryl (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.); 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 sorbit 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.); tetraPOE·tetraPOP ethylenediamine condensates (e.g., , Tetronic, etc.); 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; alkylethoxydimethylamine oxide; and hydrophilic nonionic surfactants such as trioleyl phosphate.

[0037] Examples of sequestering agents include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, edetate disodium, edetate trisodium, edetate tetrasodium, sodium citrate, and sodium polyphosphate. Examples of suitable phosphate buffers include sodium thorium, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, and trisodium ethylenediaminehydroxyethyltriacetate.

[0038] Examples of pearlescent agents include glycol distearate and titanium mica.

[0039] Examples of the amino acid include neutral amino acids (e.g., threonine, cysteine, etc.); basic amino acids (e.g., hydroxylysine, etc.); and the amino acid derivatives include, for example, acyl sarcosine sodium (sodium lauroyl sarcosine), acyl sarcosine sodium (sodium lauroyl sarcosine), Examples of the anti-inflammatory agent include glutamic acid salts, acyl β-alanine sodium, glutathione, and pyrrolidone carboxylic acid.

[0040] Examples of organic amines include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol.

[0041] Examples of polymer emulsions include acrylic resin emulsion, polyethyl acrylate emulsion, acrylic resin liquid, polyacrylic alkyl ester emulsion, polyvinyl acetate resin emulsion, and natural rubber latex.

[0042] 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).

[0043] Vitamins include, for example, vitamins A, B1, B2, B6, C, E and their derivatives. , pantothenic acid and its derivatives, biotin, etc.

[0044] Examples of antioxidants include tocopherols, dibutylhydroxytoluene (BHT), butylhydroxyanisole, pyrosulfite, gallic acid ester, phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.

[0045] Examples of preservatives include parabens and phenoxyethanol.

[0046] Other water-soluble polymers include semi-synthetic water-soluble polymers such as starch-based polymers (e.g., carboxymethyl starch, methylhydroxypropyl starch, etc.); alginic acid-based polymers (e.g., sodium alginate, propylene glycol alginate, etc.); Examples 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.

[0047] The various active ingredients include, for example, anti-inflammatory agents (e.g., salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (e.g., placenta extract, saxifrage extract, arbutin, etc.); various extracts (e.g., Phellodendron bark, Coptis chinensis, Lithospermum root, Peony, Swertia japonica, Birch, sage, Loquat, Carrot, Aloe, Mallow, Iris, Grape, Job's tears, Loofah, Lily, Saffron, Cnidium rhizome, Angelica acutiloba, Hypericum perforatum, Ononis, Niacinth, etc.); Examples of effective anti-inflammatory agents include: garlic, chili pepper, tangerine peel, angelica tree, seaweed, etc.), activators (e.g., royal jelly, photosensitizers, cholesterol derivatives, etc.); blood circulation promoters (e.g., nonylic 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.); and anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, hypotaurine, etc.). [Example]

[0048] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples as long as it does not depart from the gist of the invention.

[0049] <Test Example 1> Compositions were prepared by mixing the ingredients shown in Table 1. Each of the prepared compositions was evaluated for the following items.

[0050] (1) Evaluation of contractility 10cm x 10cm artificial leather (protein leather, PBZ13001 BE) 0.5 g of the composition was dropped onto the artificial leather and left to dry overnight at 40°C to form a coating film. The left and right ends of the artificial leather were pulled 5 mm, and the extent of shrinkage (length (mm)) was measured. The results are also shown in Table 1. It was found that the composition of the present invention had a slow contraction force and provided a coating film with just the right amount of softness.

[0051] (2) Evaluation of elongation 5 g of the composition was added to a 4 cm diameter plastic dish, spread over the entire bottom of the dish, and left to dry overnight at 40°C to form a coating film. The coating film was removed from the dish, and the left and right ends of the coating film were pulled with a load of 1.0 N to measure the elongation (length (mm)). The results are also shown in Table 1. The composition of the present invention had a moderate degree of spreadability. Formulations lacking either a thickening polysaccharide or a cellulose-based water-soluble polymer were either too spreadable (too soft) or too insufficient (too hard), so it was found that a coating film with appropriate flexibility could be obtained by combining the two.

[0052] (3) Pressure relief evaluation 20 g of the composition was added to a 10 cm diameter plastic dish, and a low-resilience urethane foam mat (10 cm x 10 cm, 3 cm thick) was immersed in the composition and allowed to dry overnight at 40°C. After film formation, a load of 3.0 N was applied vertically to the urethane foam mat, and the displacement of the sinking (length (mm)) was measured using a force gauge. The results are also shown in Table 1. With the composition of the present invention, the sinking was shallower, and it was recognized that the pressure was alleviated by the presence of the cosmetic film.

[0053] [Table 1] [Industrial Applicability]

[0054] The present invention can relieve pressure on the skin, thereby preventing skin deformation and associated skin problems such as wrinkles, and provides consumers with a new option for beauty treatments, making it extremely useful in industry.

Claims

1. A composition for external use on skin containing a thickening polysaccharide, a water-soluble cellulose polymer, and a polyhydric alcohol, A composition used to relieve pressure on the skin.

2. 2. The composition of claim 1, wherein the thickening polysaccharide is selected from the group consisting of xanthan gum and locust bean gum.

3. The composition of claim 1 , wherein the cellulosic water-soluble polymer is selected from the group consisting of hydroxypropyl methylcellulose and hydroxyethyl cellulose.

4. 2. The composition according to claim 1, wherein the weight ratio of the content of the thickening polysaccharide to the content of the water-soluble cellulose polymer is 1:2 to 15:

1.

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

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