Skin cosmetics and aerosol skin cosmetics dispensed from a container in a foamy form.

Abstract

The objective is to provide a skin cosmetic that is dispensed as a foam and has reduced squeaky and sticky texture. [Solution] A skin cosmetic comprising (A) 3-6% by mass of niacinamide, (B) 0.1-0.7% by mass of dimethicone, (C) 0.1-0.5% by mass of polyether-modified silicone with HLB 11-16, (D) 0.3-0.9% by mass of polyglycerin fatty acid ester, (E) 2-8% by mass of glycerin, (F) 0.1-1% by mass of an oil that is liquid at 25°C, and (G) water.

Description

[Technical Field]

[0001] This invention relates to skin cosmetics and aerosol skin cosmetics that are dispensed from a container in a foamy form. [Background technology]

[0002] Conventionally, various skin cosmetics such as serums have been developed, and one of them is foamy skin cosmetics. For example, there are skin cosmetics contained in a pump container capable of dispensing foam, which are dispensed by passing through a porous membrane inside the container, mixing with air to form foam. Another example is skin cosmetics contained in a foam-dispensing container together with carbon dioxide gas, which are dispensed as foam by pushing the spray nozzle when used. Skin cosmetics dispensed as foam are considered easier to use than liquids because they are less likely to drip on the skin.

[0003] For example, Patent Document 1 discloses an aerosol cosmetic containing the following components (A), (B), (C), (D), (E), and (F), with the entire stock solution accounting for 100% by mass, and (G) carbon dioxide: (A) 0.01 to 1% by mass of sorbitan fatty acid ester with HLB 2 to 9, (B) 0.01 to 2.5% by mass of polyoxyethylene sorbitan fatty acid ester with HLB 10 to 18, (C) 0.1 to 2% by mass of acrylic acid polymer, (D) 3 to 20% by mass of polyol, (E) water, and (F) 5% by mass or less of ethanol.

[0004] Even today, with the development of various skin cosmetics, there is still a need for proposals for new skin cosmetics. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2016-17052 [Overview of the project] [Problems that the invention aims to solve]

[0006] The inventors had been studying skin cosmetics for some time and noticed that foamy skin cosmetics can feel sticky. They also focused on the problem of stickiness when skin cosmetics are applied to the skin.

[0007] Therefore, the objective is to provide a skin cosmetic that is dispensed as a foam and has reduced squeaky and sticky textures. [Means for solving the problem]

[0008] As a result of diligent research, the present inventors have found that by creating a skin cosmetic containing components (A) to (G) as shown below, it is possible to form a fine foam and obtain a skin cosmetic with reduced squeaky and sticky texture. The present invention was completed by further research based on this finding, and this disclosure includes, for example, the inventions shown below. Item 1. A skin cosmetic comprising (A) 3-6% by mass of niacinamide, (B) 0.1-0.7% by mass of dimethicone, (C) 0.1-0.5% by mass of polyether-modified silicone with HLB 11-16, (D) 0.3-0.9% by mass of polyglycerin fatty acid ester, (E) 2-8% by mass of glycerin, (F) 0.1-1% by mass of an oil that is liquid at 25°C, and (G) water. Item 2. The skin cosmetic according to Item 1, further containing at least one preservative selected from the group consisting of phenoxyethanol and ethylhexylglycerin, wherein the total content of the preservatives in the skin cosmetic is 0.1 to 0.6% by mass. Item 3. An aerosol skin cosmetic containing the skin cosmetic described in Item 1 or 2 and carbon dioxide. [Effects of the Invention]

[0009] According to this disclosure, it is possible to provide a skin cosmetic that is dispensed in a foamy form and has improved squeaky and sticky properties. [Modes for carrying out the invention]

[0010] The embodiments included in this disclosure are described in further detail below. In this disclosure, “contains” also means “substantially consists of” or “consists of.”

[0011] This disclosure includes a skin cosmetic comprising (A) 3-6% by mass of niacinamide, (B) 0.1-0.7% by mass of dimethicone, (C) 0.1-0.5% by mass of polyether-modified silicone with HLB 11-16, (D) 0.3-0.9% by mass of polyglycerin fatty acid ester, (E) 2-8% by mass of glycerin, (F) 0.1-1% by mass of an oil that is liquid at 25°C, and (G) water. Hereinafter, this skin cosmetic may be referred to as the skin cosmetic of this disclosure.

[0012] Ingredient (A) Niacinamide (sometimes referred to as component (A)), also known as nicotinamide, is a well-known substance with the chemical formula C6H6N2O.

[0013] In the skin cosmetic composition of this disclosure, the content of component (A) is 3 to 6% by mass. In the skin cosmetic composition of this disclosure, the content of component (A) is preferably 3 to 5% by mass.

[0014] Ingredient (B) Dimethicone (INCI name, sometimes listed as component (B)) is a linear siloxane polymer in which the ends of dimethylpolysiloxane are capped with trimethylsiloxy groups (-OSi(CH)3).

[0015] While not limiting this disclosure, component (B) is preferably exemplified by what is commonly referred to as low-viscosity dimethicone. Therefore, component (B) is preferably kinematically viscous 5 mm 2 / s or more 100mm 2 Examples of dimethicone less than / s are given, more preferably 5-50 mm 2 Examples include dimethicone with a viscosity of / s. Kinematic viscosity is measured at 25°C using an Uppelohde viscometer with an ASTM D445-46T.

[0016] Dimethicone is commercially available and is not intended to limit the present disclosure. However, as an example of low-viscosity dimethicone, the product name KF-96A-50CS (viscosity 50 mm 2 / s (25°C)), product name KF-96A-30CS (viscosity 30 mm 2 / s (25°C)), product name KF-96A-20CS (viscosity 20 mm 2 / s (25°C)), product name KF-96A-10CS (viscosity 10 mm 2 / s (25°C)), product name KF-96A-6CS (viscosity 6 mm 2 / s (25°C)), product name KF-96A-5CS (viscosity 5 mm 2 / s (25°C)) (all manufactured by Shin-Etsu Chemical Co., Ltd., values follow the catalog) may be mentioned.

[0017] Component (B) may be used alone or in combination of two or more.

[0018] In the skin cosmetic of the present disclosure, the content of component (B) is 0.1 to 0.7% by mass. In the skin cosmetic of the present disclosure, the content of component (B) is preferably 0.1 to 0.6% by mass, more preferably 0.1 to 0.5% by mass, still more preferably 0.1 to 0.4% by mass, and particularly preferably 0.1 to 0.3% by mass.

[0019] Ingredients (C) The polyether-modified silicone with HLB 11 to 16 (which may be referred to as component (C)) refers to a modified silicone with HLB 11 to 16 having a structure in which the hydrocarbon group in the side chain and / or terminal of the silicone is substituted with a polyether group. In the present disclosure, as component (C), preferably the hydrocarbon group in the side chain of the silicone is substituted with a polyether group. Component (C) may be any of linear, branched, and crosslinked types. Examples of the polyether group include a polyethyleneoxy group, a polypropyleneoxy group, etc. Component (C) may be an alkyl-copolymerized type of polyether-modified silicone.

[0020] In this disclosure, the HLB (Hydrophile Lypophile Balance) value is a known indicator of the balance between hydrophilicity and lipophilicity. Within the range of 0 to 20, a smaller HLB value indicates stronger lipophilicity, while a larger HLB value indicates stronger hydrophilicity. In this disclosure, HLB typically follows the Griffin formula. Examples of HLB values ​​for component (C) include preferably 12 to 15, more preferably 13 to 15. When component (C) contains two or more polyether-modified silicones, it is preferable that each polyether-modified silicone satisfies this value.

[0021] Examples of component (C) include, but are not limited to, PEG-11 methyl ether dimethicone (HLB 14.5), PEG-10 methyl ether dimethicone (HLB 13), PEG-12 dimethicone (HLB 13), and PEG-10 dimethicone (HLB 14.5).

[0022] Component (C) is commercially available and includes, for example, PEG-11 methyl ether dimethicone (HLB 14.5) trade name KF96-6011 (manufactured by Shin-Etsu Chemical Co., Ltd.), PEG-10 methyl ether dimethicone (HLB 13) trade name DOWSIL SS-2802 (manufactured by Dow-Toray Industries, Inc.), PEG-12 dimethicone (HLB 13) trade name DOWSIL SH-3771M (manufactured by Dow-Toray Industries, Inc.), and PEG-10 dimethicone (HLB 14.5) trade name KF-6043 (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0023] Component (C) may be used alone or in combination of two or more components.

[0024] In the skin cosmetic composition of this disclosure, the content of component (C) is 0.1 to 0.5% by mass. In the skin cosmetic composition of this disclosure, the content of component (C) is preferably 0.1 to 0.4% by mass, and more preferably 0.1 to 0.3% by mass.

[0025] Ingredients (D) Polyglycerin fatty acid ester (sometimes referred to as component (D)) is an ester of glycerin and a fatty acid having an average degree of polymerization of 2 or more (an integer), where the average degree of polymerization of glycerin is preferably an integer of about 5 to 10, more preferably an integer of about 6 to 10. In this disclosure, component (D) is a nonionic surfactant. The HLB value of component (D) is preferably 14 to 20, more preferably 14 to 19, and even more preferably 14 to 18.

[0026] The number of carbon atoms in the fatty acids constituting the polyglycerol fatty acid ester is preferably 8 to 18, more preferably 10 to 14, and even more preferably 12 to 14. The fatty acids may be linear or branched, and may be saturated or unsaturated. Examples of fatty acids include lauric acid, myristic acid, palmitic acid, palmitoleic acid, oleic acid, vaccenic acid, linoleic acid, capric acid, stearic acid, isostearic acid, and linolenic acid. Fatty acids may be used individually or in any combination of two or more.

[0027] Examples of component (D) that are more preferably esters of glycerin with an average degree of polymerization of 5 or more and fatty acids having 10 to 14 carbon atoms, and even more preferably esters of glycerin with an average degree of polymerization of 5 to 10 and fatty acids having 12 to 14 carbon atoms. Examples of component (D) that are more preferably polyglycerin monofatty acid esters and polyglycerin difatty acid esters.

[0028] Examples of component (D) include polyglyceryl-10 laurate, polyglyceryl-10 stearate, polyglyceryl-4 stearate, polyglyceryl-10 tristearate, polyglyceryl-10 distearate, polyglyceryl-10 diisostearate, polyglyceryl-10 myristate, polyglyceryl-10 dioleate, polyglyceryl-2 oleate, and polyglyceryl-6 dicaprate. More preferably, polyglyceryl-10 laurate and polyglyceryl-10 myristate are examples of polyglycerin fatty acid esters.

[0029] These are commercially available, and examples include polyglyceryl-10 laurate traded as Sunsoft M12J (HLB 15.5) (manufactured by Taiyo Kagaku Co., Ltd.), polyglyceryl-10 stearate traded as Decaglyn 1-SV (HLB 12.0) (manufactured by Nikko Chemicals Co., Ltd.), polyglyceryl-4 stearate traded as Tetraglyn 1-SV (HLB 6.0) (manufactured by Nikko Chemicals Co., Ltd.), polyglyceryl-10 tristearate traded as Decaglyn 3-SV (HLB 7.5) (manufactured by Nikko Chemicals Co., Ltd.), and polyglyceryl-10 myristate traded as Sunsoft Q14Y-C (HLB 16.7) (manufactured by Taiyo Kagaku Co., Ltd.).

[0030] Component (D) may be used alone or in combination of two or more components.

[0031] In the skin cosmetic composition of this disclosure, the content of component (D) is 0.3 to 0.9% by mass. In the skin cosmetic composition of this disclosure, the content of component (D) is preferably 0.3 to 0.7% by mass, and more preferably 0.3 to 0.5% by mass.

[0032] Ingredient (E) Glycerin (sometimes listed as component (E)) is a trihydric alcohol represented by the formula C3H8O3.

[0033] In the skin cosmetic composition of this disclosure, the content of component (E) is 2 to 8% by mass. In the skin cosmetic composition of this disclosure, the content of component (E) is preferably 3 to 7% by mass, more preferably 3 to 6% by mass.

[0034] Ingredients (F) The liquid oil at 25°C (sometimes referred to as component (F)) is not particularly limited, and examples include ester oils, silicone oils (excluding components (B) and (C)), hydrocarbon oils, higher fatty acids, higher alcohols, vegetable oils, animal oils, vitamins, vitamin derivatives, etc. More preferably, component (F) is ester oil, silicone oil, hydrocarbon oil, vitamins, vitamin derivatives, etc. These may be used individually or in combination of two or more.

[0035] Examples of ester oils, though not limited to this disclosure, include ethylhexyl palmitate, ethylhexyl isopalmitate, isopropyl palmitate, isopropyl myristate, caprylic / capric triglyceride, polyglyceryl-6 octacaprylate, C12-15 alkyl benzoate, cetyl ethylhexanoate, isotridecyl isononanoate, triethylhexanoin, pentaerythyl tetraethylhexanoate, octyldodecyl myristate, diisostearyl malate, bisethoxydiglycol cyclohexane-1,4-dicarboxylic acid, and pentaerythrityl tetraethylhexanoate. Preferably, examples of ester oils include caprylic / capric triglyceride and triethylhexanoin.

[0036] Examples of silicone oils, though not limiting to this disclosure, include volatile silicones, methylphenyl silicone oil, methylhydrogen silicone oil, and modified silicones. More preferably, examples of silicone oils include cyclic polymethylsiloxane and methylphenyl silicone oil, and even more preferably, cyclopentasiloxane (D5) and diphenylsiloxyphenyl trimethicone. As stated above, components (B) and (C) are not included in the silicone oil of component (F), and therefore, the content of components (B) and (C) is not included in component (F).

[0037] Examples of hydrocarbon oils, though not limiting to this disclosure, include undecane, dodecane, tridecane, liquid paraffin, liquid isoparaffin, squalane, and α-olefin oligomeric polybutene. Preferably, examples of hydrocarbon oils include squalane.

[0038] Examples of higher fatty acids, though not limiting to this disclosure, include oleic acid and isostearic acid. Preferably, examples of higher fatty acids include isostearic acid.

[0039] Examples of higher alcohols, though not limiting to this disclosure, include lauryl alcohol, oleyl alcohol, isostearyl alcohol, octyldodecanol, hexyldecanol, and the like. Preferably, examples of higher alcohols include octyldodecanol.

[0040] Examples of vegetable oils, though not limited to this disclosure, include olive oil, castor oil, avocado oil, jojoba oil, safflower oil, soybean oil, camellia oil, corn oil, rapeseed oil, rice bran oil, palm oil, sunflower oil, and cottonseed oil. Jojoba oil is a preferred example of a vegetable oil.

[0041] Examples of animal oils, though not limiting to this disclosure, include mink oil, horse oil, and liquid lanolin.

[0042] Examples of vitamins and vitamin derivatives include vitamin A (retinol), retinyl palmitate, ascorbyl tetrahexyldecanoate, vitamin E (tocopherol), and tocopherol acetate. Preferably, examples of vitamins and vitamin derivatives include ascorbyl tetrahexyldecanoate.

[0043] Examples of component (F) include, more preferably, ester oils, silicone oils, and the like, and even more preferably, tri(caprylic / capric acid) glyceryl, diphenylsiloxyphenyl trimethicone, and the like.

[0044] Ingredient (F) is commercially available, for example, as polyglyceryl-6 octacaprylate under the trade name Saracos HG-8 (manufactured by Nisshin Oillio Group Ltd.), as triethylhexanoin under the trade name TIO (manufactured by Nisshin Oillio Co., Ltd.), as alkyl (C12-15) benzoate under the trade name TEGOSOFT TN (manufactured by Evonik Operations GmbH), as tri(caprylic / capric acid) glyceryl under the trade name M Fine Oil CCT-1 (manufactured by Miyoshi Oil & Fat Co., Ltd.), as diphenylsiloxyphenyl trimethicone under the trade name KF-56A (manufactured by Shin-Etsu Chemical Co., Ltd.), as diisostearyl malate under the trade name Hymalate DIS (manufactured by Higher Alcohol Industry Co., Ltd.), and as cetyl ethylhexanoate under the trade name CETIOL Examples include SN-1 (manufactured by BASF Japan Ltd.), ethylhexyl palmitate traded as Saracos P-8 (manufactured by Nisshin Oillio Ltd.), pentaerythrityl tetraethylhexanoate traded as FineNeo-408 (manufactured by Nippon Seika Co., Ltd.), squalane traded as Squalane (manufactured by Kishimoto Special Liver Oil Industry Co., Ltd.), and cyclopentasiloxane traded as KF-995 (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0045] Component (F) may be used alone or in combination of two or more components.

[0046] In the skin cosmetic composition of this disclosure, the content of component (F) is 0.1 to 1% by mass. In the skin cosmetic composition of this disclosure, the content of component (F) is preferably 0.1 to 0.9% by mass, and more preferably 0.1 to 0.8% by mass.

[0047] Furthermore, although not limiting to this disclosure, when component (F) contains an ester oil, the ester oil content in the skin cosmetic of this disclosure is preferably 0.005 to 0.3% by mass, more preferably 0.01 to 0.2% by mass, and even more preferably 0.01 to 0.1% by mass. Furthermore, although not limiting to this disclosure, when component (F) contains a silicone oil (excluding components (B) and (C)), the silicone oil content in the skin cosmetic of this disclosure is preferably 0.05 to 0.5% by mass, more preferably 0.1 to 0.3% by mass.

[0048] Water (sometimes referred to as component (G)) may be purified water, deionized water, or any other type of water.

[0049] The content of component (G) in the skin cosmetic composition of this disclosure is not particularly limited. Examples of component (G) content include preferably 30 to 90% by mass, more preferably 30 to 85% by mass, even more preferably 35 to 80% by mass, particularly preferably 35 to 70% by mass, particularly more preferably 35 to 60% by mass, and most still preferably 35 to 50% by mass.

[0050] The skin cosmetic composition disclosed herein may contain any other ingredients, to the extent that they do not interfere with the effects of the disclosure herein. Examples of such other ingredients include thickeners, rice ferment filtrate, eggshell membrane, surfactants (cationic surfactants, anionic surfactants, amphoteric surfactants, nonionic surfactants), solvents, preservatives, solid oils (solid at 25°C), fragrances, colorants, antioxidants, pH adjusters, humectants (such as dipropylene glycol), cooling agents, UV absorbers, UV scatterers, blood circulation promoters, whitening agents, anti-inflammatory agents, bactericides, plant extracts, and various physiologically active ingredients. Such other ingredients may be used individually or in combination of two or more, and their amounts may be appropriately determined within a range that does not interfere with the effects of the disclosure herein. It should be noted that ingredients (A) to (G) may have the function of surfactants, etc., listed as other ingredients, but ingredients (A) to (G) are not included in the content of other ingredients.

[0051] Without limiting this disclosure, as an example of other components, thickeners include, for example, plant-derived polymers such as agar, xanthan gum, gum arabic, galactan, carob gum, guar gum, carrageenan, tragacanth gum, karaya gum, pectin, quince seed (quince), and algae colloid (brown algae extract); microbial polymers such as dextran, succinoglucan, and pullulan; animal-derived polymers such as collagen, casein, albumin, and gelatin; alginate-based polymers such as sodium alginate and propylene glycol alginate; vinyl-based polymers such as polyvinyl alcohol, polyvinyl ethyl ether, polyvinylpyrrolidone, carboxyvinyl polymer (carbomer), and alkali-modified carboxyvinyl polymer; and methyl Examples of suitable polymers include cellulose, ethylcellulose, hydroxypropylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, nitrocellulose, sodium carboxymethylcellulose, crystalline cellulose, sodium cellulose sulfate, cellulose powder, and other cellulosic polymers; acrylic polymers such as sodium polyacrylate, polyethyl acrylate, polyacrylamide, and (acrylates / alkyl acrylate (C10-30)) crosspolymers; polyoxyethylene polymers, polyoxyethylene polyoxypropylene copolymer polymers, polyquaternium-7, polyethyleneimine, cationic polymers, bentonite, magnesium aluminum silicate, laponite, hectorite, and anhydrous silicic acid, among other inorganic water-soluble polymers. Preferably, carboxyvinyl polymers and (acrylates / alkyl acrylate (C10-30)) crosspolymers are used as thickeners.

[0052] Thickening agents are commercially available, and examples include carboxyvinyl polymers such as Carbopol L 980 and 981 (both manufactured by Lubrizol), and acrylates / alkyl acrylate (C10-30) crosspolymers such as Carbopol 1342, 1382, ETD2020, PEMULEN TR-1, and TR-2 (all manufactured by Lubrizol). Thickening agents may be used individually or in combination of two or more.

[0053] If the skin cosmetic composition of this disclosure contains a thickening agent, the amount of the thickening agent is not limited, but examples of the amount of the thickening agent in the skin cosmetic composition include preferably 0.1 to 0.5% by mass, more preferably 0.1 to 0.4% by mass, and even more preferably 0.2 to 0.4% by mass.

[0054] Without limiting this disclosure, as an example of other components, rice ferment filtrate is usually obtained by fermenting rice or rice bran with yeast, sake starter, or koji, or by saccharification by enzymatic decomposition. Rice ferment filtrate is commercially available, for example, the trade name Rice Ferment Filtrate PD (Saccharomyces / Rice Ferment Filtrate) (manufactured by Maruzen Pharmaceutical Co., Ltd.). Rice ferment filtrate may be used alone or in combination of two or more types. When the skin cosmetic composition of this disclosure contains rice ferment filtrate, the content of rice ferment filtrate is not limited, but examples of preferred amounts in the skin cosmetic composition include 1 to 40% by mass, more preferably 10 to 40% by mass, and even more preferably 20 to 40% by mass. It should be noted that rice ferment filtrate usually contains water, but the amount of water contained in the rice ferment filtrate is not included in the content of component (G). In other words, the content of component (G) can be said to be the amount blended. The same explanation applies to each component other than rice ferment filtrate and component (G).

[0055] Without limiting this disclosure, eggshell membrane can be described as an example of other components. The origin of eggshell membrane is not particularly limited, and typically it comes from the eggs of terrestrial oviparous animals such as birds (including domestic birds such as chickens, quail, turkeys, ducks, geese, ostriches, guinea fowl, bantams, pigeons, emus, and pheasants), with bird eggs being a preferred example. Eggshell membrane is a thin membrane located on the inside of the eggshell. Eggshell membrane may be obtained by drying and grinding eggshell membrane, or by hydrolyzing eggshell membrane (hydrolyzed eggshell membrane), etc. The shape of eggshell membrane is also not limited, and powder is usually a preferred example. Eggshell membrane is commercially available, and examples include the trade names EM Powder (300) (powder obtained by drying and grinding eggshell membrane), EM Protein-P (powder obtained by hydrolyzing eggshell membrane), and EMlastic (powder obtained by hydrolyzing eggshell membrane) (all manufactured by Kewpie Corporation). Eggshell membrane may be used alone or in combination of two or more types. When the skin cosmetic composition of this disclosure contains eggshell membrane, the amount of eggshell membrane is not limited, but preferably 1 × 10 in the skin cosmetic composition. -12 ~ is 1 x 10 -7 Mass%, more preferably 1 × 10 -12 ~ is 1 x 10 -10 Examples include mass percentages.

[0056] While not limiting to this disclosure, preservatives are exemplified as examples of other components, such as phenoxyethanol, ethylhexylglycerin, glyceryl caprylate, and silver oxide. Preservatives may be used individually or in combination of two or more. When the skin cosmetic composition of this disclosure contains a preservative, the amount of the preservative is not limited, but preferably 0.1 to 1% by mass, more preferably 0.2 to 0.8% by mass, is exemplified. The skin cosmetic composition of this disclosure preferably contains a preservative, and more preferably contains phenoxyethanol and / or ethylhexylglycerin. When the skin cosmetic composition of this disclosure contains phenoxyethanol and / or ethylhexylglycerin, the total amount of phenoxyethanol and ethylhexylglycerin in the skin cosmetic composition is preferably exemplified as 0.1 to 0.6% by mass.

[0057] The form of the skin cosmetic composition of this disclosure is not limited as long as it can be dispensed as a foam as described later, and is liquid at 30°C. Although not limited in this respect, from the viewpoint that the skin cosmetic composition of this disclosure is usually dispensed as a foam from a container, it is preferably exemplified that the viscosity at 30°C is 0 to 10,000 mPa·s, more preferably 1,000 to 7,000 mPa·s, and even more preferably 2,000 to 5,000 mPa·s. Although not limiting to this disclosure, when the skin cosmetic composition of this disclosure is mixed with air and dispensed as a foam as described later, a lower viscosity is preferable, and the viscosity at 30°C is preferably about 0 to 1,000 mPa·s, more preferably about 0 to 300 mPa·s, and even more preferably about 0 to 100 mPa·s. Furthermore, although not limiting to this disclosure, when the skin cosmetic composition of this disclosure is dispensed in a foamy form using a propellant, as described later, a viscosity of approximately 1000 to 7000 mPa·s at 30°C is preferably exemplified. The viscosity was measured using a BM viscometer (manufactured by Toki Sangyo Co., Ltd., rotor No. 2, 6 rpm, 1 minute, 30°C).

[0058] The skin cosmetic composition of this disclosure can be manufactured by following procedures known in the art, by mixing components (A) to (G) and, if necessary, by appropriately mixing in the other components.

[0059] The skin cosmetic composition of this disclosure is typically used by dispensing it as a foam from a container. The skin cosmetic composition of this disclosure may be used contained in a foaming container capable of being mixed with air and dispensed as a foam, or it may be used contained in a foaming container with carbon dioxide gas.

[0060] A foaming container capable of dispensing a foamy substance by mixing it with air is not particularly limited as long as it can dispensing a foamy substance by mixing the skin cosmetic contained in the container with air. Conventional containers can be used as such containers, for example, a pump foaming container capable of dispensing foam by pressing down on the pump head, or a squeeze foaming container capable of dispensing foam by pressing (compressing) the body. Typically, a foaming container is equipped with a porous membrane for forming foam, and foam is formed when the skin cosmetic contained in the container passes through the porous membrane. Although not limiting to this disclosure, examples of materials for the porous membrane and container include plastic materials such as nylon, polyester, and polyolefin, and the pore size of the porous membrane is not limited, but is preferably exemplified by approximately 100 to 150 mesh (approximately 100 μm to 150 μm).

[0061] Conventional pressure-resistant containers can be used as foam spray containers capable of containing carbon dioxide gas and dispensing skin cosmetics in a foamy form, and are not particularly limited. Examples of such containers include conventional pressure-resistant containers made of aluminum, steel, etc., that are suitable for use with aerosol products, and normally, the skin cosmetic is dispensed in a foamy form by pushing the spray nozzle during use.

[0062] Accordingly, this disclosure also provides an aerosol skin cosmetic containing the skin cosmetic of this disclosure and carbon dioxide. Hereinafter, this aerosol skin cosmetic may be referred to as the aerosol skin cosmetic of this disclosure. The aerosol skin cosmetic of this disclosure can be manufactured by filling a pressure vessel with the skin cosmetic of this disclosure and carbon dioxide.

[0063] In the aerosol skin cosmetic of this disclosure, the content of the skin cosmetic and carbon dioxide is not limited as long as the skin cosmetic is dispensed in a foamy state using carbon dioxide (propellant). However, examples include 1 to 4 parts by mass of carbon dioxide per 100 parts by mass of the skin cosmetic of this disclosure, and more preferably 1.5 to 3 parts by mass.

[0064] In the aerosol skin cosmetic of this disclosure, carbon dioxide is used as a propellant, but nitrogen gas, argon gas, etc. may also be used as propellants as needed.

[0065] The method for manufacturing the aerosol skin cosmetic of this disclosure is not limited and can be manufactured according to conventionally known aerosol skin cosmetic manufacturing procedures. Without limiting this disclosure, as an example, the aerosol skin cosmetic of this disclosure can be manufactured in a pressure-resistant container by filling the skin cosmetic of this disclosure into a pressure-resistant container, sealing it, and then filling it by pressurizing it with carbon dioxide, and if necessary, further pressurizing it with a propellant such as nitrogen gas.

[0066] Both the skin cosmetics and aerosol skin cosmetics disclosed herein are used by being dispensed from a container in a foamy form. Therefore, both the skin cosmetics and aerosol skin cosmetics disclosed herein can also be described as skin cosmetics that come into contact with the skin in a foamy (foamy) form.

[0067] This disclosure provides a skin cosmetic that is dispensed as a foam and has improved squeaky and sticky properties. The skin cosmetic and aerosol skin cosmetic of the present invention are cosmetics intended for skin care, and specifically, serums, lotions, emulsions, sunscreen compositions, etc., are preferred examples. Although not limiting to this disclosure, the skin cosmetic and aerosol skin cosmetic of the present invention are usually used by applying them to the skin (including the scalp). After application, the cosmetic may be absorbed into the skin by pressing with the palm of the hand, etc., either immediately or after a certain period of time (for example, 30 seconds to 5 minutes), wiped off, or washed off, and can be used as appropriate depending on the purpose, preferably absorbed into the skin. [Examples]

[0068] The embodiments of this disclosure will be described in more detail below with examples, but the embodiments of this disclosure are not limited to the examples below.

[0069] Test Example 1 Preparation of skin cosmetics The skin cosmetic compositions described in Examples 1-4 and Comparative Examples 1-4 were prepared by mixing each component according to the composition shown in Table 1.

[0070] (B) Dimethicone 50cs: Product name KF-96A-50CS (viscosity 50mm 2 / s (25℃), manufactured by Shin-Etsu Chemical Co., Ltd. (B) Dimethicone 10cs: Product name KF-96A-10CS (viscosity 10mm 2 / s (25℃), manufactured by Shin-Etsu Chemical Co., Ltd. (B) Dimethicone 6cs: Product name KF-96A-6CS (viscosity 6mm 2 / s (25℃), manufactured by Shin-Etsu Chemical Co., Ltd. (C)PEG-11 Methyl Ether Dimethicone: Product name KF96-6011 (HLB 14.5), manufactured by Shin-Etsu Chemical Co., Ltd. (D) Polyglyceryl-10 Laurate: Product name Sunsoft M12J (HLB 15.5), manufactured by Taiyo Kagaku Co., Ltd. (D) Polyglyceryl-10 myristate: Product name Sunsoft Q14Y-C (HLB 16.7), manufactured by Taiyo Kagaku Co., Ltd. (E) Glycerin (concentrated glycerin): Product name SUPEROL KPO, GLYCERIN (99.7%), manufactured by P&G Chemicals. (F) Caprylic / Capric Triglyceride: Product name M Fine Oil CCT-1, manufactured by Miyoshi Oils Co., Ltd. (F) Diphenylsiloxyphenyl trimethicone: Trade name KF-56A, manufactured by Shin-Etsu Chemical Co., Ltd. PEG-10 Dimethicone: Product name KF96-6017, HLB 4.5, manufactured by Shin-Etsu Chemical Co., Ltd. Phenoxyethanol: Product name Phenoxyethanol SP, manufactured by Yokkaichi Synthetic Co., Ltd. Ethylhexylglycerin: Product name Adekanol GE-RF, manufactured by ADEKA Corporation.

[0071] Evaluation Procedure Each prepared skin cosmetic was evaluated for foam formation, squeaky feel, and stickiness according to the following criteria. · Evaluation of foam formation 25g of skin cosmetic was placed in a commercially available pump foamer (50ml capacity, a pump foamer that mixes with air to form foam). After placement, the pump head was pressed down several times until the skin cosmetic was dispensed as foam. After the skin cosmetic began to be dispensed as foam, the pump head was pressed two more times to dispense the foamy skin cosmetic. Five expert panelists evaluated the state of the foam at this time. They scored the product on a three-point scale according to the following criteria, calculated the total score, and evaluated it according to the following criteria. If no foam was formed, the item criterion was "0: No foam formed".

[0072] [Item criteria] 2: Fine bubbles (the size of bubbles visible in the appearance of the foam is 1 mm or less) 1: The foam is coarse and watery (the size of the bubbles visible in the foam is larger than 1 mm). 0: Does not foam

[0073] [Judgment criteria] ○: Total value 10-8 △: Total value 7-5 ×: Total value 4~0

[0074] · Squeakiness evaluation The inner forearms of five expert panelists were washed and dried. Then, 0.1g of foamy skin cosmetic, dispensed in the same manner as described above, was applied with a finger to a 2cm x 7cm area on the inner forearm. The panelists were asked to rate the squeaking sensation when the foam was no longer visible on a 3-point scale according to the following criteria. The total score was calculated and evaluated according to the following criteria. As a comparative standard, instead of the skin cosmetic, the following criteria were used to standardize the standards among the panelists: Standard Solution 1 (Dimethicone (product name KF-96A-50cs)) was used, and when applied to the inner forearm in the same manner, the squeaking sensation was rated as "2: No squeaking", Standard Solution 2 (Dimethicone 6cs (product name KF-96A-6CS)) was used, and when applied to the inner forearm in the same manner, the squeaking sensation was rated as "1: Slightly squeaky", and when applied to the inner forearm in the same manner, the squeaking sensation was rated as "0: Squeaky". Standard solutions 1-3 are all manufactured by Shin-Etsu Chemical Co., Ltd.

[0075] [Item criteria] 2: Does not creak 1: Slightly creaky 0: creak

[0076] [Judgment criteria] ○: Total value 10-8 △: Total value 7-5 ×: Total value 4~0

[0077] · Stickiness The inner forearms of five expert panelists were washed and dried. Then, 0.1g of foamy skin cosmetic, dispensed in the same manner as described above, was applied with a finger to a 2cm x 7cm area on the inner forearm. The stickiness was scored on a 3-point scale according to the following criteria once the foam was no longer visible. The total score was calculated and evaluated according to the following criteria. As a comparative standard, water (purified water) was applied to the inner forearm in the same manner, with "2: No stickiness felt"; a 10% glycerin aqueous solution was applied to the inner forearm in the same manner, with "1: Slightly sticky"; and a 30% glycerin aqueous solution was applied to the inner forearm in the same manner, with "0: Very sticky" to standardize the criteria.

[0078] [Item criteria] 2: Does not feel sticky 1: Feels slightly sticky. 0: Feels very sticky.

[0079] [Judgment criteria] ○: Total value 10-8 △: Total value 7-5 ×: Total value 4~0

[0080] result The results are shown in Table 1.

[0081] [Table 1]

[0082] As shown in Table 1, the cosmetic composition of Comparative Example 1, which contained ingredients (A), (B), and (D) to (G) but did not contain (C), showed poor results in foam formation ("×"), squeaky texture ("×"), and stickiness ("△"). Similarly, the cosmetic compositions of Comparative Examples 2 and 3, which contained ingredients (A) to (D), (F), and (G) but did not contain (E), showed poor results in foam formation, squeaky texture, and stickiness ("△"). In contrast, the skin cosmetics of Examples 1 to 4, which contained ingredients (A) to (G), showed good results in foam formation, squeaky texture, and stickiness ("〇"). Furthermore, Comparative Example 4, which was similar to Example 1 in that it contained ingredients (A) to (G), but in which the content of ingredient (E) was changed to 9% by mass in Example 1, showed poor results in foam formation ("△"), squeaky texture ("△"), and stickiness ("×"). Thus, the skin cosmetics of Examples 1 to 4 were found to be good skin cosmetics in terms of foam formation, squeaky feeling, and stickiness.

[0083] Test Example 2 Preparation of aerosol skin cosmetics According to the compositions shown in Table 2, each component was mixed to prepare the aerosol skin cosmetics described in Examples 5-7 and Comparative Examples 5-7. Specifically, according to the compositions shown in Table 2, the components other than carbon dioxide were mixed in the same manner as in Test Example 1 to prepare a skin cosmetic (undiluted solution). The skin cosmetic thus prepared was placed in a commercially available foam spray container (pressure-resistant container), and then carbon dioxide was added to prepare the aerosol skin cosmetic.

[0084] Carbomer: Product name: Carbopol (CARBOPO L) 980, manufactured by Lubrizol. (Acrylates / C10-30 Alkyl Acrylate) Crosspolymer: Product name PEMULEN TR-2, manufactured by Lubrizol.

[0085] Evaluation Procedure Each prepared aerosol skin cosmetic was evaluated for foam formation, squeaky feel, and stickiness according to the following criteria.

[0086] · Evaluation of foam formation (using carbon dioxide) As described above, the spray nozzle of the foam-dispensing container (pressure-resistant container) filled with aerosol skin cosmetic was pressed several times until it was dispensed as a foam. After the aerosol skin cosmetic began to be dispensed as a foam, the spray nozzle was pressed two more times to dispense the foamy aerosol skin cosmetic. Five expert panelists controlled the foam state according to the same criteria as in Test Example 1.

[0087] · Squeakiness evaluation The inner forearms of five expert panelists were washed and dried. Then, a foamy aerosol skin cosmetic (two sprays) was applied with their fingers to a 2cm x 7cm area on the inner forearm, using the same method as described above. The five expert panelists then assessed the squeaking sensation when the foam was no longer visible, according to the same criteria as in Test Example 1.

[0088] · Stickiness The inner forearms of five expert panelists were washed and dried. Then, a foamy aerosol skin cosmetic (two sprays) was applied with their fingers to a 2cm x 7cm area on the inner forearm, using the same method as described above. The stickiness level when the foam was no longer visible was then assessed by the five expert panelists according to the same criteria as in Test Example 1.

[0089] result The results are shown in Table 2.

[0090] [Table 2]

[0091] As shown in Table 2, the skin cosmetics of Examples 5 to 7 all received a "○" rating for foam formation, squeaky feel, and stickiness, indicating favorable evaluation results. In contrast, Comparative Example 5, which shares the same components (A) to (G) as Example 5 but changes the content of component (E) to 9% by mass as in Example 5, received a "△" rating for foam formation, a "△" rating for squeaky feel, and a "×" rating for stickiness, indicating unfavorable results. Similarly, Comparative Example 6, which shares the same components (A) to (G) as Example 5 but changes the content of component (D) to 1.5% by mass as in Example 5, received a "○" rating for foam formation, a "△" rating for squeaky feel, and a "×" rating for stickiness, indicating unfavorable results. Furthermore, while Comparative Example 7 shares the same components (A) to (G) as Example 5, in which the content of component (B) was changed to 1% by mass and the content of component (F) was changed to 1.51% by mass in Example 5, foam formation was "×", squeaky texture was "△", and stickiness was "△", indicating that good results were not obtained. Thus, it was found that the aerosol skin cosmetics of Examples 5 to 7 were good skin cosmetics in terms of foam formation, squeaky texture, and stickiness. In addition, although not shown in the results, compared to the case without a thickener, the aerosol skin cosmetic with a thickener was able to be made better in terms of foam formation, etc.

Claims

1. A skin cosmetic comprising (A) 3 to 6% by mass of niacinamide, (B) 0.1 to 0.7% by mass of dimethicone, (C) 0.1 to 0.5% by mass of polyether-modified silicone with an HLB of 11 to 16, (D) 0.3 to 0.9% by mass of polyglycerin fatty acid ester, (E) 2 to 8% by mass of glycerin, (F) 0.1 to 1% by mass of an oil that is liquid at 25°C, and (G) water.

2. The skin cosmetic according to claim 1, further comprising at least one preservative selected from the group consisting of phenoxyethanol and ethylhexylglycerin, wherein the total content of the preservatives in the skin cosmetic is 0.1 to 0.6% by mass.

3. An aerosol skin cosmetic comprising the skin cosmetic composition described in claim 1 or 2 and carbon dioxide.

Images