Skin cosmetic composition

Abstract

To provide a skin cosmetic composition excellent in moist feeling of the skin and its persistence, rough skin-improving effect and pigmentation-inhibiting effect, and suppressing sticky feeling of the skin.SOLUTION: The skin cosmetic composition contains (A) maltotetraose and (B) panthenol, wherein the mass ratio of the content of the component (A) to the content of the component (B) [component (A) / component (B)] is 1 or more and 50 or less.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a skin cosmetic composition. [Background technology]

[0002] Dry skin is prone to becoming rough, with redness and rough skin texture caused by external stimuli such as scratching, and it is known that the progression of pigmentation is accelerated in rough skin. In order to resolve such skin problems caused by dry skin, it is necessary to approach skin moisturization, improvement of rough skin, and inhibition of pigmentation.

[0003] For example, Patent Document 1 proposes a skin external preparation composition containing a moisturizing ingredient, maltooligosaccharide. Generally, the more moisturizing ingredient the composition contains, the more moist the skin feels, but the more sticky the skin feels, which creates a problem with the feel when used. To suppress this stickiness, powder ingredients such as silica are commonly used, but their low solubility can cause formulation problems such as precipitation and cloudiness.

[0004] Therefore, a skin cosmetic composition that provides a moist feeling on the skin and maintains the moist feeling, has an excellent effect of improving rough skin, and inhibits pigmentation, and also reduces stickiness on the skin, has not yet been provided, and there is currently a strong demand for its prompt development. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 08 / 047709 Summary of the Invention [Problem to be solved by the invention]

[0006] An object of one aspect of the present invention is to provide a skin cosmetic composition that provides moist feeling on the skin and its long-lasting effect, is excellent in improving rough skin, and inhibits pigmentation, and also reduces sticky feeling on the skin. [Means for solving the problem]

[0007] A skin cosmetic composition according to one embodiment of the present invention is a skin cosmetic composition containing (A) maltotetraose and (B) panthenol, wherein the mass ratio [(A) / (B)] of the content of the component (A) to the content of the component (B) is 1 or more and 50 or less.

[0008] The means for solving the above problems are as follows. <1> (A) Maltotetraose and (B) a skin cosmetic composition containing panthenol, The skin cosmetic composition is characterized in that the mass ratio of the content of the component (A) to the content of the component (B) [(A) / (B)] is 1 or more and 50 or less. <2> the content of the component (A) is 0.5% by mass or more and 5.0% by mass or less relative to the total amount of the skin cosmetic composition, The content of the component (B) is 0.05% by mass or more and 0.8% by mass or less based on the total amount of the skin cosmetic composition. <1> The skin cosmetic composition according to claim 1. [Effects of the Invention]

[0009] According to one aspect of the present invention, it is possible to provide a skin cosmetic composition that provides moist feeling on the skin and its long-lasting effect, is excellent in rough skin improving effect, and inhibits pigmentation, and also reduces sticky feeling on the skin. DETAILED DESCRIPTION OF THE INVENTION

[0010] (Skin cosmetic composition) The skin cosmetic composition according to an embodiment of the present invention (hereinafter sometimes referred to as "this embodiment") contains (A) maltotetraose and (B) panthenol, and may contain other ingredients as necessary.

[0011] In this specification, (A) maltotetraose may be referred to as "(A) component" or "(A)," and (B) panthenol may be referred to as "(B) component" or "(B)."

[0012] <(A) Maltotetraose> The (A) maltotetraose imparts moisturizing effect to the skin and pigmentation inhibiting effect to the skin cosmetic composition.

[0013] The content of the component (A) is not particularly limited and can be selected appropriately depending on the purpose. However, from the viewpoint of improving the sustained moist feeling, non-stickiness, and pigmentation inhibitory effect on the skin after use of the skin cosmetic composition, the content is preferably 0.5% by mass or more and 5.0% by mass or less, and more preferably 1.0% by mass or more and 4.0% by mass or less, of the total amount of the skin cosmetic composition.

[0014] When the content of the component (A) is 0.5% by mass or more relative to the total amount of the skin cosmetic composition, the skin after use of the skin cosmetic composition will have a moist feeling and a good effect of inhibiting pigmentation.

[0015] When the content of the component (A) is 5.0% by mass or less relative to the total amount of the skin cosmetic composition, the skin does not feel sticky after use of the skin cosmetic composition.

[0016] The component (A) may be either a synthesized product or a commercially available product, such as Leoguard MT (manufactured by Lion Specialty Chemicals Co., Ltd.) and Tetrap (manufactured by Nagase Vita Co., Ltd.).

[0017] <(B) Panthenol> The (B) panthenol imparts moist feeling to the skin and improves rough skin to the skin cosmetic composition.

[0018] The content of the (B) component is not particularly limited and can be selected appropriately depending on the purpose. However, from the viewpoint of improving the durability of moist feeling on the skin after use of the skin cosmetic composition, the lack of stickiness, and the effect of improving rough skin, the content is preferably 0.05% by mass or more and 0.8% by mass or less, and more preferably 0.1% by mass or more and 0.5% by mass or less, of the total amount of the skin cosmetic composition.

[0019] When the content of the component (B) is 0.05% by mass or more relative to the total amount of the skin cosmetic composition, the skin after use of the skin cosmetic composition has a moist feeling and is effective in improving rough skin.

[0020] When the content of the component (B) is 0.8% by mass or less relative to the total amount of the skin cosmetic composition, the skin does not feel sticky after use of the skin cosmetic composition.

[0021] The component (B) may be either an appropriately synthesized product or a commercially available product, such as D-pantothenyl alcohol (Panthenol, manufactured by BASF Japan Ltd.).

[0022] In the skin cosmetic composition of this embodiment, from the viewpoint of improving the sustained moist feeling and non-stickiness of the skin after use of the skin cosmetic composition, the mass ratio [(A) / (B)] of the content of the component (A) to the content of the component (B) is 1 or more and 50 or less, preferably 8.0 or more and 40.0 or less, and more preferably 10 or more and 20 or less.

[0023] When the mass ratio [(A) / (B)] is 1 or more, the skin after use of the skin cosmetic composition will have a long-lasting moist feeling and will not have a sticky feeling.

[0024] When the mass ratio [(A) / (B)] is 50 or less, the skin after use of the skin cosmetic composition will have a long-lasting moist feeling and will not have a sticky feeling.

[0025] <Other ingredients> In addition to the component (A) and the component (B), the skin cosmetic composition may contain other components that are commonly used in skin cosmetic compositions, etc., as needed, within the scope that does not impair the effects of this embodiment.

[0026] The other components are not particularly limited and can be appropriately selected depending on the purpose. Examples thereof include surfactants, water-soluble polymers, oils, silicones, alcohols, lanolin derivatives, protein derivatives, amino acids, vitamins and other pharmaceutical agents, disinfectants, preservatives, pH adjusters, antioxidants, sequestering agents, animal and plant extracts or derivatives thereof, chelating agents, moisturizers other than component (A), thickeners, ultraviolet absorbers or scattering agents, colorants, pigments, and water-insoluble polymer compound powders.

[0027] <<Surfactants>> Examples of the surfactant include anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants.

[0028] <<<Anionic surfactants>>> The anionic surfactant is not particularly limited and can be appropriately selected depending on the purpose, but is preferably a higher fatty acid salt, a polyoxyethylene alkyl ether sulfate, or an ether carboxylic acid or a salt thereof, and more preferably a higher fatty acid salt. These may be used alone or in combination of two or more.

[0029] -Higher fatty acid salts- The higher fatty acid salt is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include laurate, myristate, palmitate, stearate, etc. Among these, laurate, myristate, and palmitate are preferred.

[0030] The counter ion in the higher fatty acid salt of the anionic surfactant is not particularly limited and can be appropriately selected depending on the purpose. Examples thereof include alkali metal ions, ammonium ions, alkanolamines, and basic amino acids.

[0031] Examples of the alkali metal ions include sodium ions and potassium ions. Examples of the alkanolamines include monoethanolamine, diethanolamine, and triethanolamine. Examples of the basic amino acids include lysine and arginine.

[0032] The higher fatty acid salt can be blended as a higher fatty acid salt, but the higher fatty acid and a salt serving as a counter ion may be added separately to a blending tank and subjected to a neutralization reaction to form the higher fatty acid salt.

[0033] The higher fatty acid used to prepare the higher fatty acid salt may be suitably synthesized or may be a commercially available product, such as NAA (registered trademark)-122 (lauric acid, manufactured by NOF Corporation), NAA-142 (myristic acid, manufactured by NOF Corporation), NAA-160 (palmitic acid, manufactured by NOF Corporation), and NAA-180 (stearic acid, manufactured by NOF Corporation).

[0034] The higher fatty acid salt may be appropriately synthesized or may be a commercially available product, such as NIKKOL potassium laurate LK-120 (potassium laurate, manufactured by Nikko Chemicals Co., Ltd.), NIKKOL potassium myristate MK-140 (potassium myristate, manufactured by Nikko Chemicals Co., Ltd.), or Tysoap MNK-40 (liquid blend of potassium coconut oil fatty acid and potassium myristate, manufactured by Nikko Chemicals Co., Ltd.).

[0035] -Polyoxyethylene (POE) alkyl ether sulfate- The polyoxyethylene alkyl ether sulfate is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include compounds represented by the following general formula (A1): The polyoxyethylene alkyl ether sulfate may be used alone or in combination of two or more.

[0036] [ka]

[0037] In the general formula (A1), R 1 represents an alkyl group, and the alkyl group moiety preferably has 10 to 14 carbon atoms.

[0038] In the general formula (A1), n ​​represents the average number of moles of ethylene oxide (EO) added, and the average number of moles of ethylene oxide added is preferably 1 to 5.

[0039] In the general formula (A1), X represents an alkali metal or ammonium. The alkali metal is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include sodium and potassium.

[0040] Specific examples of the polyoxyethylene alkyl ether sulfate include polyoxyethylene (1) lauryl ether sodium sulfate, polyoxyethylene (2) lauryl ether sodium sulfate (also known as POE (2) sodium laureth sulfate), polyoxyethylene (3) lauryl ether sodium sulfate (also known as POE (3) sodium laureth sulfate), polyoxyethylene (4) lauryl ether sodium sulfate, polyoxyethylene (5) lauryl ether sodium sulfate, polyoxyethylene (3) alkyl (C12,13) ​​ether sodium sulfate, polyoxyethylene (2) lauryl ether ammonium sulfate, and polyoxyethylene (3) lauryl ether ammonium sulfate. The number in parentheses indicates the average number of moles (n) of ethylene oxide (EO) added.

[0041] -Ether carboxylic acid or its salt- The ether carboxylic acid or salt thereof is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include compounds represented by the following general formula (A2) or (A3): The ether carboxylic acid or salt thereof may be used alone or in combination of two or more.

[0042] [ka]

[0043] [ka]

[0044] In the general formula (A2) and general formula (A3), R 2 represents a linear or branched alkyl or alkenyl group having 5 to 23 carbon atoms, or a phenyl group substituted with a linear or branched alkyl or alkenyl group having 5 to 23 carbon atoms. 2 The moiety preferably has 10 to 14 carbon atoms.

[0045] In the general formula (A2), R 3 may be the same or different and represent an alkylene group having 2 to 4 carbon atoms, preferably 2 carbon atoms.

[0046] In the general formula (A2), o represents the average number of moles of alkylene oxide added, which is 1 to 20. The average number of moles of alkylene oxide added is preferably 1 to 5.

[0047] In the general formulas (A2) and (A3), M 1 represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a basic amino acid.

[0048] Among these, polyoxyalkylene alkyl ether carboxylic acid or a salt thereof is preferred, and as the polyoxyalkylene alkyl ether carboxylic acid or a salt thereof, polyoxyethylene (POE) alkyl ether acetate is preferred.

[0049] The ether carboxylate may be an appropriately synthesized product or a commercially available product. Commercially available ether carboxylates include, for example, Energicol EC-30 (manufactured by Lion Specialty Chemicals Co., Ltd.; polyoxyethylene (3) lauryl ether sodium acetate), Viewlite LCA-25F (polyoxyethylene (3) lauryl ether sodium acetate), Viewlite LCA-30D (polyoxyethylene (3) lauryl ether sodium acetate), Viewlite LCA-H (polyoxyethylene (4) lauryl ether acetic acid), Viewlite LCA-25NH (laureth-4 carboxylic acid), Viewlite SHAA (sodium lauryl glycol carboxylate), Viewlite LCA (polyoxyethylene (3) lauryl ether sodium acetate) (all manufactured by Sanyo Chemical Industries, Ltd.), Kao Akipo RLM-45NV (polyoxyethylene (4.5) lauryl ether sodium acetate), and Kao Akipo RLM-100NV (polyoxyethylene (10) lauryl ether sodium acetate) (all manufactured by Kao Corporation). The numerical value in the parentheses indicates the average number of moles (o) of alkylene oxide added.

[0050] The content of the anionic surfactant is not particularly limited and can be selected appropriately depending on the purpose, but is preferably 1.0% by mass or more and 25% by mass or less, and more preferably 3% by mass or more and 7% by mass or less, relative to the total amount of the skin cosmetic composition.

[0051] <<<Cationic surfactants>>> The cationic surfactant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include alkylamine salts, fatty acid amidoamine salts, alkyltrimethylammonium salts, dialkyldimethylammonium salts, alkyldimethylbenzylammonium salts, etc. These may be used alone or in combination of two or more.

[0052] <<<Amphoteric surfactants>>> The amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose. Examples include betaine-type amphoteric surfactants and amino acid-type amphoteric surfactants. Among these, betaine-type amphoteric surfactants are preferred. These may be used alone or in combination of two or more.

[0053] The betaine-type amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include alkylbetaine-type amphoteric surfactants, amidobetaine-type amphoteric surfactants, sulfobetaine-type amphoteric surfactants, imidazolinium betaine-type amphoteric surfactants, etc. These may be used alone or in combination of two or more.

[0054] The alkyl betaine type amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include lauryl dimethyl amino acetic acid betaine, coconut oil alkyl betaine, stearyl dimethyl amino acetic acid betaine, etc. These may be used alone or in combination of two or more.

[0055] The amidobetaine amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include lauric acid amidopropyl betaine, coconut oil fatty acid amidopropyl betaine, palm kernel oil fatty acid amidopropyl betaine, etc. These may be used alone or in combination of two or more.

[0056] The sulfobetaine-type amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include lauryl hydroxysulfobetaine, lauramidopropyl hydroxysultaine, coconut oil fatty acid dimethylamino hydroxysulfobetaine, lauryl dimethylamino hydroxysulfobetaine, etc. These may be used alone or in combination of two or more.

[0057] The imidazolinium betaine amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium, N-coconut oil fatty acid acyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium, and 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, etc. These may be used alone or in combination of two or more.

[0058] Among these, amidobetaine type amphoteric surfactants and alkylbetaine type amphoteric surfactants are preferred, lauric acid amidopropyl betaine and lauryldimethylaminoacetic acid betaine are more preferred, and lauric acid amidopropyl betaine is even more preferred.

[0059] The content of the amphoteric surfactant is not particularly limited and can be selected appropriately depending on the purpose, but is preferably from 2% by mass to 15% by mass, more preferably from 3% by mass to 10% by mass, and even more preferably from 4% by mass to 10% by mass, relative to the total amount of the skin cosmetic composition.

[0060] The amphoteric surfactant may be suitably synthesized or may be a commercially available product. Commercially available amphoteric surfactants include, for example, alkyl betaine amphoteric surfactants under the trade names Amphitol 24B (lauryl dimethylaminoacetic acid betaine, manufactured by Kao Corporation), Nissan Anon (registered trademark) BL (lauryl dimethylaminoacetic acid betaine, manufactured by NOF Corporation), NIKKOL AM-301 (lauryl dimethylaminoacetic acid betaine, manufactured by Nikko Chemicals Co., Ltd.), Amogene (registered trademark) S (lauryl dimethylaminoacetic acid betaine, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.), and Amogene SH (lauryl dimethylaminoacetic acid betaine, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.); amido betaine amphoteric surfactants such as Energicol L-30B (lauric acid amidopropyl betaine, manufactured by Lion Specialty Chemicals Co., Ltd.), Nissan Anon BDF (registered trademark)-SF (coconut oil fatty acid amidopropyl betaine, manufactured by NOF Corporation), and Obazoline CAG-30 (coconut oil fatty acid amidopropyl betaine, manufactured by Toho Chemical Industry Co., Ltd.); Examples of such surfactants include sulfobetaine-type amphoteric surfactants such as 20HD (lauryl hydroxysulfobetaine, manufactured by Kao Corporation) and Softazoline LSB (lauramidopropyl hydroxysultaine, manufactured by Kawaken Fine Chemicals Co., Ltd.); and imidazoline-type amphoteric surfactants such as NIKKOL AM-101 (2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, manufactured by Nikko Chemicals Co., Ltd.) and Nissan Anon GLM-R-LV (2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, manufactured by NOF Corporation).

[0061] In addition to the above-mentioned amphoteric surfactants, alkylamine oxide compounds can also be used.

[0062] The alkylamine oxide compound is not particularly limited and can be appropriately selected depending on the purpose. Examples include alkyldimethylamine oxide and dihydroxyethyllaurylamine oxide. Examples of the alkyldimethylamine oxide include lauryldimethylamine oxide, myristyldimethylamine oxide, coconut alkyldimethylamine oxide, and oleyldimethylamine oxide. Among these, lauryldimethylamine oxide is preferred. These compounds may be used alone or in combination of two or more.

[0063] The content of the alkylamine oxide compound is preferably from 1% by mass to 4% by mass, and more preferably from 1% by mass to 3% by mass, based on the total amount of the skin cosmetic composition.

[0064] <<<Nonionic surfactants>>> The nonionic surfactant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, polyglycerin fatty acid esters, sucrose fatty acid esters, alkyl polyglycosides, and polyoxyethylene polyoxypropylene glycols. These may be used alone or in combination of two or more.

[0065] <<Oil content>> The oil is not particularly limited and can be appropriately selected depending on the purpose. Examples thereof include vegetable oils and fats such as castor oil, olive oil, cacao oil, hardened palm oil, camellia oil, coconut oil, Japan wax, jojoba oil, grapeseed oil, and avocado oil, and ester compounds thereof; animal oils and fats such as mink oil and egg yolk oil; waxes such as beeswax, spermaceti, lanolin, hydrogenated lanolin, carnauba wax, and candelilla wax; hydrocarbons such as liquid paraffin, squalane, microcrystalline wax, ceresin wax, paraffin wax, and petrolatum; natural and synthetic fatty acids such as oleic acid, isostearic acid, and behenic acid; and esters such as glycerol tri-2-ethylhexanoate, 2-ethylhexyl stearate, butyl stearate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, octyldodecyl oleate, and cholesterol oleate. These may be used alone or in combination of two or more.

[0066] The content of the oil is not particularly limited and can be selected appropriately depending on the purpose, but is preferably 0.1% by mass or more and 3% by mass or less relative to the total amount of the skin cosmetic composition.

[0067] <<Alcoholic beverages>> The alcohols are not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include natural and synthetic higher alcohols such as cetyl alcohol, oleyl alcohol, stearyl alcohol, hexyldecanol, octyldodecanol, lauryl alcohol, etc. These may be used alone or in combination of two or more.

[0068] The content of the alcohols is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.01% by mass or more and 15% by mass or less relative to the total amount of the skin cosmetic composition.

[0069] <<Moisturizers other than ingredient (A)>> The moisturizer other than the component (A) is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include isoprene glycol, 1,2-pentanediol, diethylene glycol, diethylene glycol monoalkyl ether, polypropylene glycol, hydrogenated castor oil (30 E.O.), diglycerin, triglycerin, polyglycerin, etc. These may be used alone or in combination of two or more.

[0070] The content of the moisturizer other than the component (A) is not particularly limited and can be selected appropriately depending on the purpose, but is preferably 0.1% by mass or more and 10.0% by mass or less relative to the total amount of the skin cosmetic composition.

[0071] <<Preservatives>> The preservative is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include benzoates, sorbates, dehydroacetates, parahydroxybenzoates, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, 3,4,4'-trichlorocarbanilide, benzalkonium chloride, hinokitiol, resorcinol, methylchloroisothiazolinone-methylisothiazolinone solution (trade name: Kason CG, manufactured by Rohm and Haas Japan Co., Ltd.), salicylic acid, pentanediol, phenoxyethanol, and ethanol. These may be used alone or in combination of two or more.

[0072] The content of the preservative is not particularly limited and can be selected appropriately depending on the purpose, but is preferably 0.1% by mass or more and 1.0% by mass or less relative to the total amount of the skin cosmetic composition.

[0073] <<Antioxidants>> The antioxidant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include dibutylhydroxytoluene, butylhydroxyanisole, ascorbic acid, etc. These may be used alone or in combination of two or more.

[0074] The content of the antioxidant is not particularly limited and can be appropriately selected according to the purpose, but it is preferably 0.1% by mass or more and 1.0% by mass or less based on the total amount of the skin cosmetic composition.

[0075] <<Chelating agent>> The chelating agent is not particularly limited and can be appropriately selected according to the purpose. Examples thereof include edetic acid, disodium edetate, ethylenediaminetetraacetate, hexametaphosphate, and gluconic acid. These may be used alone or in combination of two or more.

[0076] The content of the chelating agent is not particularly limited and can be appropriately selected according to the purpose, but it is preferably 0.1% by mass or more and 1.0% by mass or less based on the total amount of the skin cosmetic composition.

[0077] <<pH adjuster>> The pH adjuster is not particularly limited and can be appropriately selected according to the purpose. Examples thereof include sodium hydroxide, potassium hydroxide, citric acid, succinic acid, triethanolamine, aqueous ammonia, triisopropanolamine, phosphoric acid, and glycolic acid. These may be used alone or in combination of two or more.

[0078] <<UV absorber or scattering agent>> The UV absorber or the scattering agent is not particularly limited and can be appropriately selected according to the purpose. Examples thereof include 2-hydroxy-4-methoxybenzophenone, octyldimethyl para-aminobenzoate, ethylhexyl paramethoxycinnamate, titanium oxide, kaolin, and talc. These may be used alone or in combination of two or more.

[0079] The content of the UV absorber or the scattering agent is not particularly limited and can be appropriately selected according to the purpose, but it is preferably 0.01% by mass or more and 1.0% by mass or less based on the total amount of the skin cosmetic composition.

[0080] <<Vitamins>> The vitamins are not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include vitamin A, B vitamins, vitamin C, vitamin D, vitamin E, vitamin F, vitamin K, vitamin P, vitamin U, carnitine, ferulic acid, γ-oryzanol, α-lipoic acid, and orotic acid and its derivatives. These may be used alone or in combination of two or more.

[0081] The content of the vitamins is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.001% by mass or more and 0.5% by mass or less relative to the total amount of the skin cosmetic composition.

[0082] <<Amino acids>> The amino acids are not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include glycine, alanine, valine, leucine, isoleucine, phenylalanine, tryptophan, cystine, cysteine, methionine, proline, hydroxyproline, aspartic acid, glutamic acid, arginine, histidine, lysine and derivatives thereof, etc. These may be used alone or in combination of two or more.

[0083] The content of the amino acids is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.001% by mass or more and 0.5% by mass or less relative to the total amount of the skin cosmetic composition.

[0084] The other components may be appropriately synthesized or commercially available. The content of the other components relative to the total amount of the skin cosmetic composition is not particularly limited and can be appropriately selected depending on the purpose.

[0085] <ph> The pH of the skin cosmetic composition at 25° C. is preferably 4.0 to 9.0, and more preferably 4.5 to 6.0 from the viewpoint of suppressing skin irritation.

[0086] The method for measuring the pH of the skin cosmetic composition is not particularly limited, but examples include a method using a glass electrode color hydrogen ion concentration indicator HM-30R (manufactured by DKK-TOA Corporation, electrode type GST-5721).

[0087] <Viscosity> The viscosity of the skin cosmetic composition at 25°C is not particularly limited and can be selected appropriately depending on the purpose. However, if the skin cosmetic composition is liquid, the viscosity is preferably 1 mPa·s or more and 50 mPa·s or less, and if the skin cosmetic composition is semi-solid, the viscosity is preferably 1 mPa·s or more and 150 mPa·s or less.

[0088] The method for measuring the viscosity of the skin cosmetic composition is not particularly limited, and examples include a method using a BM type viscometer (manufactured by Tokyo Keiki Co., Ltd.) to measure the viscosity after 1 minute at a sample temperature of 25°C, a rotation speed of 60 rpm, and a No. 3 rotor, and a method using a Brookfield viscometer BHII type (manufactured by Toki Sangyo Co., Ltd.) to measure the viscosity after 1 minute at a sample temperature of 25°C, a rotation speed of 10 rpm, and a No. 7 rotor.

[0089] <Method of manufacturing skin cosmetic composition> The method for producing the skin cosmetic composition is not particularly limited and can be appropriately selected depending on the purpose, and can be obtained by mixing the component (A), the component (B), and optionally the other components, and purified water (blended as the remainder so that the total skin cosmetic composition is 100% by mass). Specifically, the skin cosmetic composition can be produced by dissolving the component (A) and the component (B) in purified water heated to 70°C to 80°C, and then cooling the water to 40°C or below.

[0090] The skin cosmetic composition may be prepared using an apparatus. The apparatus is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include a stirring apparatus equipped with stirring blades that exert shear force and can mix the entire composition. The stirring blade is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include a propeller, a turbine, and a disperser.

[0091] <Application> The application area and method of the skin cosmetic composition are not particularly limited and can be appropriately selected depending on the purpose. For example, the composition can be applied to the whole body, face, hands, arms, legs, etc. in a usual manner.

[0092] The use of the skin cosmetic product is not particularly limited and can be appropriately selected depending on the purpose. Examples include lotion, emulsion, body cream, antiperspirant, deodorant, shampoo, rinse, treatment, body soap, oil essence, and hand soap. [Example]

[0093] The present embodiment will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to these examples. The content of each component described in the examples and comparative examples is expressed in "% by mass" and is a value converted to a pure content.

[0094] (Examples 1 to 12 and Comparative Examples 1 to 4) Skin cosmetic compositions having the compositions and contents shown in Examples 1 to 12 and Comparative Examples 1 to 4 in Tables 1 to 3 were prepared according to the following method. Specifically, purified water was heated to 70 to 80°C, and then components (A) and (B) were dissolved therein and cooled to 40°C or below. Purified water was added so that the total amount was 100% by mass, yielding the skin cosmetic compositions of the Examples and Comparative Examples. The components were mixed using a propeller as the stirring blade and a Three-One Motor (HEIDON BL1200, manufactured by Shinto Chemical Co., Ltd.) for stirring.

[0095] Each skin cosmetic composition was evaluated and judged for "skin moist feeling," "skin moist feeling duration," "non-stickiness of skin," "effect of improving rough skin," and "effect of inhibiting pigmentation." The results are shown in Tables 1 to 3 below.

[0096] <Evaluation of skin moisturizing feeling> After bathing before going to bed, five expert panelists rubbed 0.5 g of each skin cosmetic composition into their faces and evaluated the moist feeling immediately afterward based on the following evaluation criteria. The average scores of the five expert panelists were calculated and judged based on the following criteria. "◎" and "◯" were considered acceptable. -Evaluation criteria for moisturizing feeling- 5 points: Very moist 4 points: Moist 3 points: Slightly moist 2 points: Not very moisturizing 1 point: No moist feeling at all -Criteria for determining moistness- ◎: Average rating is 4.0 points or more 〇: Average evaluation score is 3.0 points or more and less than 4.0 points △: Average rating is between 2.0 and 3.0 points ×: Average evaluation score is less than 2.0 points

[0097] <Evaluation of skin moisturizing duration> After bathing before going to bed, five expert panelists rubbed 0.5 g of each skin cosmetic composition into their faces and evaluated the moist feeling the next morning based on the following evaluation criteria. The average scores of the five expert panelists were calculated and judged based on the following criteria. "A" and "◯" were considered to be acceptable. -Evaluation criteria for moisturizing duration- 5 points: Very moist 4 points: Moist 3 points: Slightly moist 2 points: Not very moisturizing 1 point: No moist feeling at all -Criteria for determining the duration of moisturizing sensation- ◎: Average score is 4.0 points or more ○: Average score is between 3.0 and 4.0 points △: Average score is between 2.0 and 3.0 points ×: Average score is less than 2.0 points

[0098] <Evaluation of non-sticky feeling on skin> After bathing before going to bed, five expert panelists rubbed 0.5 g of each skin cosmetic composition into their faces and evaluated the stickiness immediately afterward based on the following evaluation criteria. The average scores of the five expert panelists were calculated and judged based on the following criteria. "A" and "B" were considered acceptable. -Evaluation criteria for stickiness- 5 points: No stickiness at all 4 points: Not very sticky 3 points: Slightly sticky 2 points: Sticky feeling 1 point: Strong stickiness - Criteria for determining stickiness - ◎: Average score is 4.0 points or more ○: Average score is between 3.0 and 4.0 points △: Average score is between 2.0 and 3.0 points ×: Average score is less than 2.0 points

[0099] <Evaluation of rough skin improvement effect> A 30% aqueous solution of SDS (Sodium Dodecyl Sulfate) was applied to the forearms of three dry skin panelists to induce mildly rough skin. An appropriate amount of each skin cosmetic composition was applied twice daily, in the morning and evening, and the presence or absence of an effect on improving rough skin (redness) was evaluated according to the following evaluation criteria the day after application, and 2, 4, 7, and 10 days later. The average scores of the three dry skin panelists were calculated and evaluated according to the following evaluation criteria. "◎" and "◯" were considered to be acceptable. -Evaluation criteria for rough skin improvement effect- 5 points: Redness improved the day after continuous use 4 points: Redness improved after 2 days of continuous use 3 points: Redness improved after 5 days of continuous use 2 points: Redness improved after 7 days of continuous use 1 point: Redness improved after 10 days of continuous use -Criteria for assessing rough skin improvement effects- ◎: Average score is 4.0 points or more ○: Average score is between 3.0 and 4.0 points △: Average score is between 2.0 and 3.0 points ×: Average score is less than 2.0 points

[0100] <Evaluation of pigmentation suppression effect> It is believed that pigmentation occurs when reactive oxygen species (ROS) generated intracellularly by external stimuli such as ultraviolet rays promote the secretion of various cytokines from keratinocytes, activating melanocytes, which cause pigmentation such as age spots and dullness. Therefore, using human epidermal keratinocytes, we evaluated the ROS that cause pigmentation using the following method.

[0101] Human epidermal keratinocytes were seeded onto a 96-well plate and cultured for one day in a 37°C, 5% CO2 incubator to prepare test cells. Each skin cosmetic composition was added to the test cells, and samples were cultured for 16, 24, 48, 72, and 96 hours. Controls were also prepared without the skin cosmetic composition. After the culture supernatant was removed, a fluorescent ROS detection reagent was added and the cells were incubated for 30 minutes in a 37°C, 5% CO2 incubator. The supernatant was then removed, and an H2O2 / HBSS solution was added. The cells were incubated for one hour in a 30°C, 5% CO2 incubator. After the supernatant was removed, HBSS was added and the cells were measured using a fluorescence detector. Three samples were used, and the average of the obtained values ​​was used as the ROS value for that sample. "◎◎", "◎", and "〇" were considered acceptable. -Evaluation criteria for pigmentation suppression effect- ◎◎: ROS levels were reduced compared to the control 16 hours after application. ◎: ROS levels were reduced compared to the control 24 hours after application. ○: ROS levels were reduced compared to the control 48 hours after application. △: ROS levels were reduced compared to the control 72 hours after application. ×: ROS levels decreased compared to the control 96 hours after application.

[0102] [Table 1]

[0103] [Table 2]

[0104] [Table 3]

[0105] (Prescription Examples 1-4) The skin cosmetic compositions for use as body creams shown in Formulation Examples 1 to 4 in Table 4 were prepared according to the following method. Specifically, 50% by mass of purified water and 0.2% by mass of carbomer relative to the total weight of the skin cosmetic composition were weighed into a beaker and dissolved with stirring to obtain Mixture 1. The remaining 50% by mass of purified water and water-soluble components such as maltotetraose, panthenol, glycerin, dipropylene glycol, hydroxyacetophenone, acrylates copolymer, 1,2-hexanediol, EDTA-2Na, and arginine were then weighed into the vessel of a vacuum emulsification kettle and heated to 90°C to obtain Mixture 2. The resulting Mixtures 1 and 2 were dissolved with stirring to obtain Mixture 3. Oily components such as avocado oil, olive fruit oil, ceramide NP, and cetearyl alcohol, and nonionic surfactants such as sorbitan oleate and lecithin were weighed into a separate beaker and dissolved with heating to 90°C to obtain Mixture 4. The obtained mixtures 3 and 4 were mixed and stirred, and then cooled under reduced pressure to prepare a skin cosmetic composition for use as a body cream.

[0106] [Table 4]

[0107] (Prescription Examples 5-6) The skin cosmetic compositions for use as lotions shown in Formulation Examples 5 and 6 in Table 5 were prepared according to the following method. Specifically, 50% by mass of purified water and 0.05% by mass of disodium EDTA, based on the total mass of the skin cosmetic composition, were weighed into a beaker, stirred while heated to 90°C, and then cooled to 50°C to obtain Mixture 1. The remaining 50% by mass of purified water and the other ingredients were then weighed into another beaker, stirred while heated to 50°C, and obtained Mixture 2. The obtained Mixtures 1 and 2 were mixed and stirred, and then cooled to 30°C to prepare skin cosmetic compositions for use as lotions.

[0108] [Table 5]

[0109] (Prescription Examples 7-8) The skin cosmetic compositions for use as oil essences shown in Formulation Examples 7 and 8 in Table 6 were prepared according to the following method. Specifically, 50% by mass of purified water, 0.05% by mass of xanthan gum, and 0.05% by mass of disodium EDTA relative to the total mass of the skin cosmetic composition were weighed into a beaker and stirred while heated to 90°C, and then cooled to 50°C to obtain Mixture 1. The remaining 50% by mass of purified water and the other ingredients were then weighed into another beaker and stirred while heated to 50°C to obtain Mixture 2. The obtained Mixtures 1 and 2 were mixed and stirred to prepare skin cosmetic compositions for use as oil essences.

[0110] [Table 6]

[0111] Details of each component used in Examples 1 to 12, Comparative Examples 1 to 4, and Formulation Examples 1 to 8 are shown in Tables 7 and 8 below.

[0112] [Table 7]

[0113] [Table 8]

[0114] Although all of the requirements of the present invention are essential for solving the problems of the present invention with the solutions of the present invention, the description in this specification does not suggest that the requirements of the present invention are essential for solving problems other than the problems of the present invention or for solving the problems of the present invention with solutions other than the solutions of the present invention. For example, the description in this specification does not deny that a skin cosmetic composition that does not include any of the requirements of the present invention as set forth in the claims solves problems other than the problems of the present invention or solves the problems of the present invention with solutions other than the solutions of the present invention. [Industrial Applicability]

[0115] The skin cosmetic composition of the present embodiment is excellent in providing moist skin and its long-lasting effect, improving rough skin, and inhibiting pigmentation, and is also capable of suppressing stickiness on the skin. Therefore, it can be suitably used in, for example, lotions, emulsions, body creams, antiperspirants, deodorants, shampoos, rinses, treatments, body soaps, oil essences, and hand soaps.< / ph>

Claims

1. (A) maltotetraose, (B) a skin cosmetic composition containing panthenol, A skin cosmetic composition characterized in that the mass ratio [(A) / (B)] of the content of the component (A) to the content of the component (B) is 1 or more and 50 or less.

2. the content of the component (A) is 0.5% by mass or more and 5.0% by mass or less, based on the total amount of the skin cosmetic composition; The skin cosmetic composition according to claim 1, wherein the content of the component (B) is 0.05% by mass or more and 0.8% by mass or less, based on the total amount of the skin cosmetic composition.

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