JP7348122B2 - emulsified skin cosmetics - Google Patents

Description

The present invention relates to emulsified skin cosmetics.

Conventionally, skin cosmetics aimed at moisturizing the skin and preventing skin dryness have been known in various formulations, such as lotions, gels, emulsions, and creams (for example, patent literature 1-3). Among these, emulsified skin cosmetics such as emulsions and creams are preferred from the viewpoint of high moisturizing feeling and ease of use.

In these emulsified skin cosmetics, it is effective to increase the blending amount of oil and polyhydric alcohol from the viewpoint of enhancing the moisturizing feeling. However, when the amount of oil or polyhydric alcohol is increased, some users may feel sticky. Further, emulsified skin cosmetics are sometimes required to have a feeling of lasting moisturizing.

Japanese Patent Application Publication No. 2009-40705 Japanese Patent Application Publication No. 2006-22037 Japanese Patent Application Publication No. 2001-316243

Therefore, an object of the present invention is to provide an emulsified skin cosmetic that has excellent moisturizing feeling, long-lasting moisturizing feeling, and no stickiness after use.

As a result of intensive studies to achieve the above object, the present inventors found that component (A1): dipentaerythrityl tetra(hydroxystearic acid/isostearate), component (A2): dipentaerythrityl hexahydroxystearate, component (B): component ( Contains oily components other than A1) and component (A2), component (C): polyhydric alcohol, component (D): surfactant, and component (E): water, and contains the above component (A1) and the above component ( According to an emulsified skin cosmetic in which the mass ratio of the above-mentioned component (A1) to the total amount of A2) is within a specific range, the emulsified skin cosmetic has excellent moisturizing feeling, sustainability of the moisturizing feeling, and lack of stickiness after use. I found it. The present invention was completed based on these findings.

That is, the present invention contains the following component (A1), the following component (A2), the following component (B), the following component (C), the following component (D), and the following component (E), and the above component (A1 ) and the mass ratio of the component (A1) to the total amount of the component (A2) [component (A1)/{component (A1) + component (A2)}] is 0.13 to 0.6, an emulsified skin Provide cosmetics.
Component (A1): Dipentaerythrityl tetra(hydroxystearic acid/isostearate) Component (A2): Dipentaerythrityl hexahydroxystearate Component (B): Oily components other than component (A1) and component (A2) Component (C): Polyvalent Alcohol Component (D): Surfactant Component (E): Water

The above component (C) preferably contains the following component (C1) and/or component (C2).
Component (C1): Glycerin and/or polyglycerin Component (C2): Dihydric alcohol

The above component (B) contains the following component (B1) and the following component (B2), and the mass ratio of the above component (B1) to the total amount of the above component (B1) and the above component (B2) [component (B1)/ {Component (B1)+Component (B2)}] is preferably from 0.1 to 5.0.
Component (B1): Oily component that is solid or pasty at 25°C Component (B2): Oily component that is liquid at 25°C

The total content of the component (A1) and the component (A2) is preferably 0.5 to 1.5% by mass.

The emulsified skin cosmetic of the present invention has excellent moisturizing feeling, sustainability of the moisturizing feeling, and lack of stickiness after use.

The emulsified skin cosmetic of the present invention includes oily ingredients other than tetra(hydroxystearic acid/isostearic acid) dipentaerythrityl, hexahydroxystearic acid dipentaerythrityl, tetra(hydroxystearic acid/isostearic acid) dipentaerythrityl, and dipentaerythrityl hexahydroxystearate, and polyhydric alcohol. , a surfactant, and water. In this specification, dipentaerythrityl tetra(hydroxystearate/isostearate) is referred to as "component (A1)", dipentaerythrityl hexahydroxystearate is referred to as "component (A2)", dipentaerythrityl tetra(hydroxystearate/isostearate) and hexahydroxystearate are referred to as "component (A2)". Oily components other than dipentaerythrityl hydroxystearate (i.e., oily components other than component (A1) and component (A2)) are referred to as "component (B)," polyhydric alcohols are referred to as "component (C)," and surfactants are referred to as "component ( D)" and water may be referred to as "component (E)." In addition, component (A1) and component (A2) may be collectively referred to as "component (A)."

Component (C) preferably contains glycerin and/or polyglycerin. Moreover, it is preferable that component (C) contains a dihydric alcohol. In this specification, glycerin and/or polyglycerin may be referred to as "component (C1)" and dihydric alcohol may be referred to as "component (C2)".

That is, the emulsified skin cosmetic of the present invention contains at least component (A1), component (A2), component (B), component (C), component (D), and component (E). The emulsified skin cosmetic of the present invention may contain components other than the above-mentioned components (A1) to (E). In addition, each component contained in the emulsified skin cosmetic of the present invention, for example, component (A1), component (A2), component (B), component (C), component (D), component (E), and other components. Each component may be used alone or in combination of two or more.

[Component (A1)]
Component (A1) is tetra(hydroxystearic acid/isostearic acid) dipentaerythrityl. Component (A1) is a component that imparts a moisturizing feeling. In addition, by blending component (A1) in combination with component (A2), after applying the emulsified skin cosmetic to the skin, it maintains non-stickiness and provides an excellent long-lasting moisturizing feeling. Can be done. Component (A1) may be used alone or in combination of two or more.

[Component (A2)]
Component (A1) is dipentaerythrityl hexahydroxystearate. Component (A2) is a component that imparts a moisturizing feeling. In addition, by blending component (A2) in combination with component (A1), after applying the emulsified skin cosmetic to the skin, it maintains non-stickiness and provides an excellent long-lasting moisturizing feeling. I can do it. Component (A2) may be used alone or in combination of two or more.

In the present invention, by using component (A1) and component (A2) in combination, stickiness can be sufficiently suppressed, and the sustainability of the moisturizing feeling in particular can be improved. The mass ratio of component (A1) to the total amount of component (A1) and component (A2) [component (A1)/{component (A1) + component (A2)}] is 0.13 to 0.6, Preferably it is 0.15 to 0.5. When the mass ratio is 0.13 or more, the moisturizing feeling is excellent in sustainability. When the mass ratio is 0.6 or less, the non-stickiness derived from component (A1) is maintained and the moisturizing feeling is excellent in sustainability.

The content ratio of component (A) in the emulsified skin cosmetic of the present invention (that is, the total content ratio of component (A1) and component (A2)) is preferably 0.5 to 1.5% by mass, more preferably is 0.6 to 1.2% by mass. When the content ratio is 0.5% by mass or more (particularly 0.6% by mass or more), the sustainability of the moisturizing feeling is even more excellent. When the content ratio is 1.5% by mass or less, the lack of stickiness is even more excellent. The content ratio of component (A1) is the total content ratio of all components (A1) in the emulsified skin cosmetic of the present invention. The content ratio of component (A2) is the total content ratio of all components (A2) in the emulsified skin cosmetic of the present invention.

[Component (B)]
Component (B) is an oily component other than component (A1) and component (A2) (that is, an oily component other than component (A1) and an oily component other than component (A2)). . Component (B) includes, for example, vegetable oil, ester oil, silicone oil, hydrocarbon oil, higher fatty acid (for example, fatty acid having 12 to 22 carbon atoms), higher alcohol (for example, aliphatic alcohol having 6 to 22 carbon atoms). , row, etc. Ingredient (B) is an oil-based ingredient that is commonly used as an essential ingredient for forming emulsified cosmetics.By incorporating ingredient (B), non-stickiness, a moisturizing feeling, and a long-lasting moisturizing feeling can be achieved. It is possible to make an emulsified cosmetic with an appropriate hardness and a good texture while still providing an excellent product. Component (B) may be used alone or in combination of two or more.

Component (B) preferably contains an oily component that is solid or pasty at 25°C and an oily component that is liquid at 25°C. In this specification, an oily component that is solid or paste-like at 25°C may be referred to as "component (B1)," and an oily component that is liquid at 25°C may be referred to as "component (B2)." Component (B1) preferably has no fluidity at 25°C, for example, and component (B2) preferably has fluidity at 25°C, for example. By using component (B1) as component (B), the agent can be appropriately hardened and the moisturizing feeling can be made more durable. In addition, by using component (B2) as component (B), the agent can be appropriately softened, and the moisturizing feeling can be improved while maintaining non-stickiness.

The viscosity η of component (B2) measured at 25°C using a Brookfield rotational viscometer is preferably 30,000 mPa·s or less (for example, 0.1 to 30,000 mPa·s), more preferably 1.0 to 10,000 mPa.・It is s.

Examples of the hydrocarbon oil corresponding to component (B1) include paraffin, microcrystalline wax, polyethylene wax, polyethylene, Fischer-Tropsch wax, ceresin, and vaseline.

Examples of higher fatty acids corresponding to component (B1) include stearic acid and behenic acid. Examples of the wax corresponding to component (B1) include carnauba wax (carnauba wax), candelilla wax, beeswax, sunflower seed wax (sunflower wax), rice bran wax, Japanese wax, shellac wax, spermaceti wax, and the like. The above-mentioned beeswax is a wax obtained from the residue of honey taken from honey beehives by a hot pressing method, a solvent extraction method, or the like. In this specification, the above-mentioned "beeswax" includes "white beeswax" which is obtained by bleaching beeswax by sunlight bleaching, chemical bleaching, adsorption, etc. Examples of the higher alcohol corresponding to component (B1) include cetanol, myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, and aracyl alcohol.

Examples of the vegetable oil corresponding to component (B1) include shea butter and mango seed oil. Examples of the ester oil corresponding to component (B1) include amino acid esters such as di(octyldodecyl/phytosteryl/behenyl) lauroylglutamate; dimer dilinoleic acid (phytosteryl/isostearyl/cetyl/stearyl/behenyl), and dimer dilinol. Acid dimer Dimer acid diesters such as dilinoleyl bis(behenyl/isostearyl/phytosteryl); Hydroxy group-containing esters other than component (A) such as hydrogenated castor oil with hydroxystearic acid; Macadamia nut fatty acids phytosteryl, hexa(hydroxystearic acid/ Examples include dipentaerythrityl (stearic acid/rosin acid), glyceryl tri(caprylic acid/capric acid/myristic acid/stearic acid), and the like.

Examples of vegetable oils corresponding to component (B2) include avocado oil, argan oil, olive oil, rice bran oil, soybean oil, corn oil, palm kernel oil, palm oil, castor oil, grape seed oil, kukui nut oil, macadamia nut oil, Examples include meadowhome oil, sunflower oil, and jojoba oil (jojoba seed oil).

Examples of the ester oil corresponding to component (B2) include ethyl oleate, isopropyl myristate, isopropyl palmitate, oleyl oleate, octyldodecyl myristate, octyldodecyl oleate, ethyl isostearate, isopropyl isostearate, and isostearic acid. Propylene glycol, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, glyceryl tri-2-ethylhexanoate (trioctanoin, triethylhexanoin), tri(caprylic/capric) glyceryl, glyceryl triisopalmitate , pentaerythritol tetra-2-ethylhexanoate, diisopropyl adipate, isocetyl octoate, isostearyl octoate, isocetyl isostearate, octyldodecyl isostearate, octyldodecyl dimethyloctanoate, isononyl isononanoate, pentaerythrityl tetraoctoate, tetra Examples include pentaerythritol isostearate and 2-ethylhexyl palmitate.

Examples of silicone oils corresponding to component (B2) include dimethyl silicone oils such as methylpolysiloxane (dimethicone) and highly polymerized methylpolysiloxane; methylphenyl silicone oils such as methylphenylpolysiloxane; methylcyclopolysiloxane and octamethyl Cyclic silicone oils such as cyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane; aminopropylmethylsiloxane/dimethylsiloxane copolymer, aminoethylaminopropylsiloxane/dimethylsiloxane copolymer, aminoethylaminopropylmethylsiloxane・Modified silicones such as amino-modified silicones such as dimethylsiloxane copolymers, carboxy-modified silicones, fatty acid-modified silicones, alcohol-modified silicones, aliphatic alcohol-modified silicones, epoxy-modified silicones, fluorine-modified silicones, and alkyl-modified silicones; Methyl hydrogen poly Examples include siloxane and dimethiconol.

Examples of the hydrocarbon oil corresponding to component (B2) include α-olefin oligomer, mineral oil, hydrogenated polyisobutene, isododecane, isohexadecane, light isoparaffin, light liquid isoparaffin, synthetic squalane, vegetable squalane, squalane, and liquid isoparaffin. , liquid paraffin, etc.

Examples of higher fatty acids corresponding to component (B2) include fatty acids having 12 to 22 carbon atoms such as isostearic acid, oleic acid, linoleic acid, and linolenic acid.

Examples of the higher alcohol corresponding to component (B2) include lauryl alcohol, isostearyl alcohol, hexyldecanol, 2-octyldodecanol, oleyl alcohol, decyltetradecanol, and caprylyl alcohol.

The mass ratio of component (B1) to the total amount of component (B1) and component (B2) [component (B1)/{component (B1) + component (B2)}] is preferably 0.1 to 5.0, More preferably 0.2 to 3.0, still more preferably 0.25 to 1.0. When the mass ratio is 0.1 or more, the hardness of the agent becomes more appropriate, and the moisturizing feeling and the sustainability of the moisturizing feeling are even more excellent. When the mass ratio is 5.0 or less, it is possible to make the agent appropriately soft, maintain non-stickiness, and provide a more excellent moisturizing feeling.

The content ratio of component (B) in the emulsified skin cosmetic of the present invention (that is, the total content of component (B1) and component (B2)) is based on 100% by mass of the emulsified skin cosmetic of the present invention. The content is preferably from 2.0 to 40.0% by weight, more preferably from 5.0 to 30.0% by weight, even more preferably from 5.0 to 20.0% by weight. When the content ratio is 2.0% by mass or more, the sustainability of the moisturizing feeling is even more excellent. When the above-mentioned content ratio is 40.0% by mass or less, the agent can be appropriately softened, and the moisturizing feeling can be improved while maintaining non-stickiness. The content ratio of component (B) above is the total content ratio of all component (B) in the emulsified skin cosmetic of the present invention.

[Component (C)]
Component (C) is a polyhydric alcohol. As mentioned above, component (C) preferably contains glycerin and/or polyglycerin (component (C1)), and also preferably contains dihydric alcohol (component (C2)). In particular, component (C) preferably includes both component (C1) and component (C2). By using a combination of component (C1) and component (C2), it is possible to suppress stickiness and provide an even better moisturizing feeling.

Component (C1) has an excellent effect of imparting a moisturizing feeling. Examples of polyglycerin include diglycerin, triglycerin, tetraglycerin, decaglycerin, and the like, with diglycerin being preferred. Component (C1) may be used alone or in combination of two or more. Among them, it is more preferable to use only glycerin from the viewpoint of further suppressing stickiness after use.

Component (C2) is less sticky than component (C1), so by combining component (C2) with component (C1), an even better moisturizing feeling can be obtained and emulsified skin with less stickiness. Cosmetics can be obtained.

Component (C2) is a dihydric alcohol, which is a general term for alcohols in which two hydrogen atoms of a hydrocarbon are replaced with hydroxyl groups. Component (C2) includes, for example, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,2-pentanediol, 1 , 2-hexanediol, 1,2-octanediol, 1,2-decanediol, 1,2-dodecanediol, (poly)alkylene glycols such as polyethylene glycol, polypropylene glycol, and the like. Among them, 1,3-butylene glycol and dipropylene glycol are preferred. Component (C2) may be used alone or in combination of two or more.

Component (C) may contain polyhydric alcohols other than component (C1) and component (C2). Examples of the other polyhydric alcohols mentioned above include trihydric alcohols other than component (C1) and polyhydric alcohols such as glucose, maltose, sorbitol, maltitol, trehalose, erythritol, arabitol, ribitol, xylitol, galactitol, mannitol, and sucrose. can be mentioned.

The content ratio of component (C1) in the emulsified skin cosmetic of the present invention is preferably 1.0 to 10.0% by mass, more preferably 2.0% by mass based on 100% by mass of the emulsified skin cosmetic of the present invention. ~8.0% by mass. When the content ratio is 1.0% by mass or more, the moisturizing feeling is more excellent. When the above-mentioned content ratio is 10.0% by mass or less, the absence of stickiness is more excellent. The content ratio of the above component (C1) is the total content ratio of all the components (C1) in the emulsified skin cosmetic of the present invention.

The content ratio of component (C2) in the emulsified skin cosmetic of the present invention is preferably 1.0 to 20.0% by mass, more preferably 2.0% by mass, based on 100% by mass of the emulsified skin cosmetic of the present invention. ~15.0% by mass. When the content ratio is 1.0% by mass or more, the moisturizing feeling is more excellent. When the above-mentioned content ratio is 20.0% by mass or less, the lack of stickiness is more excellent. The content ratio of the above component (C2) is the total content ratio of all components (C2) in the emulsified skin cosmetic of the present invention.

The content ratio of component (C) in the emulsified skin cosmetic of the present invention is preferably 2.0 to 30.0% by mass, more preferably 4.0% by mass based on 100% by mass of the emulsified skin cosmetic of the present invention. ~23.0% by weight, more preferably 5.0~20.0% by weight. When the content ratio is 2.0% by mass or more, the moisturizing feeling is more excellent. When the content ratio is 30.0% by mass or less, the lack of stickiness is more excellent. The content ratio of component (C) above is the total content ratio of all component (C) in the emulsified skin cosmetic of the present invention.

[Component (D)]
Component (D) is a surfactant. Component (D) acts as an emulsifier in the emulsified skin cosmetic of the present invention. Component (D) may be used alone or in combination of two or more.

Component (D) includes nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

Examples of the nonionic surfactants include sorbitan fatty acid esters, glycerin fatty acid esters, and alkylene oxide adducts thereof, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene alkylphenols, and polyoxyethylene sorbitol fatty acid esters. , polyoxyethylene alkylphenyl formaldehyde condensates, polyoxyethylene sterols and their derivatives, polyoxyethylene lanolin and its derivatives, polyoxyethylene beeswax derivatives, sugar esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene castor oil, etc. Can be mentioned.

Examples of sorbitan fatty acid esters include sorbitan monooleate, sorbitan monostearate, sorbitan monoisostearate, sorbitan monopalmitate, sorbitan monolaurate, sorbitan trioleate, sorbitan tristearate, sorbitan sesquistearate, and sesquioleic acid. Examples include sorbitan, sorbitan sesquiisostearate, and coconut oil fatty acid sorbitan. In addition, alkylene oxide adducts of sorbitan fatty acid esters include polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, and polyoxyethylene monoisostearate. Examples include sorbitan, monococonut fatty acid polyoxyethylene sorbitan, polyoxyethylene sorbitan tristearate, and polyoxyethylene sorbitan trioleate.

Glycerin fatty acid ester includes both monoglycerin fatty acid ester and polyglycerin fatty acid ester. Examples of monoglycerin fatty acid esters include glyceryl monocaprylate, glyceryl monocaprate, glyceryl monolaurate, glyceryl monomyristate, glyceryl monopalmitate, glyceryl monostearate, glyceryl monoisostearate, glyceryl monobehenate, and monooleic acid. Examples include glyceryl, glyceryl monoerucate, glyceryl sesquioleate, glyceryl distearate, glyceryl diisostearate, glyceryl diarachate, and the like. Examples of the polyglycerin fatty acid esters include diglyceryl monocaprylate, decaglyceryl monocaprylate, hexaglyceryl monocaprate, tetraglyceryl monolaurate, hexaglyceryl monolaurate, decaglyceryl monolaurate, poly(4-10 ) glyceryl, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monoisostearate, poly(2-10) glyceryl monostearate, diglyceryl monooleate, hexaglyceryl monooleate, diglyceryl sesquioleate, Polyglycerin with a polymerization degree of 2 to 10 of the above monoglycerin fatty acid ester, such as poly(2-10) glyceryl diisostearate, poly(6-10) glyceryl distearate, diglyceryl triisostearate, poly(10) glyceryl tristearate, etc. Examples include fatty acid esters. Examples of alkylene oxide adducts of glycerin fatty acid esters include polyoxyethylene glyceryl monostearate, polyoxyethylene glyceryl monooleate, and polyoxyethylene glyceryl mono(caprylic/capric acid).

Examples of the polyoxyalkylene alkyl ether include polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene polyoxypropylene lauryl ether, polyoxypropylene cetyl ether, and polyoxyethylene lauryl ether. Examples include oxypropylene isocetyl ether, polyoxypropylene stearyl ether, and polyoxypropylene oleyl ether.

The polyoxyalkylene fatty acid ester includes both polyoxyalkylene monofatty acid ester and polyoxyalkylene difatty acid ester. Examples of polyoxyalkylene monofatty acid esters include polyethylene glycol monofatty acid esters such as polyethylene glycol monooleate, polyethylene glycol monostearate, and polyethylene glycol monolaurate; propylene glycol monostearate, propylene glycol monolaurate, and propylene monooleate. Examples include propylene glycol monofatty acid esters such as glycol.

Examples of polyoxyalkylene difatty acid esters include polyethylene glycol difatty acid esters such as polyethylene glycol dilaurate, polyethylene glycol dimyristate, polyethylene glycol dipalmitate, polyethylene glycol distearate, polyethylene glycol diisostearate, and polyethylene glycol dibehenate. Can be mentioned.

Examples of anionic surfactants include higher fatty acid soaps, alkyl sulfate ester salts, alkyl phosphates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyl phenyl ether sulfates, alkyl ether phosphates, and alkyl ether carbonates. acid salt, acylmethyltaurate salt, N-acyl-N-methyl-β-alanine salt, N-acylglycine salt, N-acylglutamate, polyoxyethylene alkyl carboxylate, alkylphenyl ether sulfonate, alkyl sulfosuccinate Examples include acids and salts thereof, N-acylsarcosine and salts thereof, polyoxyethylene coconut oil fatty acid monoethanolamide sulfate, and the like.

Examples of cationic surfactants include alkyl amine salts, fatty acid amide amine salts, amine salts such as ester-containing tertiary amine salts, monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, and trialkyl quaternary ammonium salts. Examples include quaternary ammonium salts, alkyl quaternary ammonium salts such as benzalkonium type quaternary ammonium salts, cyclic quaternary ammonium salts such as alkylpyridinium salts, and benzethonium chloride.

Examples of amphoteric surfactants include glycine-type amphoteric surfactants such as alkylglycine salts, carboxymethylglycine salts, N-acylaminoethyl-N-2-hydroxyethylglycine salts, alkylaminopropionates, and alkyliminodipropionic acids. Aminopropionic acid type amphoteric surfactants such as salts, aminoacetic acid betaine type amphoteric surfactants such as alkyldimethylaminoacetic acid betaine, fatty acid amidopropyldimethylaminoacetic acid betaine, sulfobetaine type amphoteric surfactants such as alkylhydroxysulfobetaine, etc. can be mentioned.

From the viewpoint of emulsion stability, component (D) preferably contains a nonionic surfactant. Moreover, it is preferable that component (D) contains an anionic surfactant from a viewpoint of emulsion stability.

The content of component (D) in the emulsified skin cosmetic of the present invention is preferably 1.0 to 5.0% by mass based on 100% by mass of the emulsified skin cosmetic of the present invention. When the content ratio is within the above range, the emulsion stability of the emulsified skin cosmetic will be better. The content ratio of component (D) above is the total content ratio of all components (D) in the emulsified skin cosmetic of the present invention.

[Component (E)]
Component (E) is water, and although not particularly limited, purified water is preferred. The content of component (E) in the emulsified skin cosmetic of the present invention is not particularly limited, but is preferably 40.0 to 90.0% by mass, and more preferably Preferably it is 50.0 to 80.0% by mass.

[Other ingredients]
The emulsified skin cosmetic of the present invention may contain components other than the above-mentioned components (other components) within a range that does not impede the object of the present invention. The other components mentioned above are not particularly limited, and include, for example, components commonly used in cosmetics and quasi-drugs. Specifically, for example, lower alcohols such as ethanol; thickeners such as hydroxymethylcellulose, hydroxypropylmethylcellulose, and polysaccharide thickeners; humectants; bactericidal agents; pearling agents; scrubbing agents; glycyrrhizic acid and its salts, etc. Anti-inflammatory agents; Cooling agents such as menthol; pH adjusters such as phosphoric acid and its salts, citric acid and its salts, lactic acid and its salts, sodium hydroxide, triethanolamine; fragrances; ultraviolet absorbers; antioxidants; Examples include metal ion sequestering agents (chelating agents); film-forming polymer compounds; powders; pigments; pigments; vitamins; amino acids; astringents; whitening agents; animal and plant extracts; acids; alkalis. The above-mentioned other components may be used alone or in combination of two or more.

The emulsified skin cosmetic of the present invention is an emulsified composition, preferably an oil-in-water (O/W) type emulsified composition. Examples of dosage forms of the emulsified skin cosmetic of the present invention include creams and milky lotions.

The emulsified skin cosmetic of the present invention can be used, for example, as cosmetics, quasi-drugs, pharmaceuticals, miscellaneous goods, and the like. Specifically, it is preferably used in face cosmetics (moisturizing cosmetics, massage cosmetics, etc.), body cosmetics (moisturizing cosmetics, massage cosmetics, deodorant cosmetics, etc.), hand cosmetics, and the like.

The emulsified skin cosmetic of the present invention is a composition used to apply and cleanse the skin. The areas to which the emulsified skin cosmetic of the present invention can be used are not particularly limited, and include, for example, the face (e.g., forehead, around the eyes, corners of the eyes, cheeks, mouth, etc.), arms, elbows, backs of hands, fingertips, feet, knees, Examples include heels, neck, armpits, and back.

The emulsified skin cosmetic of the present invention is not particularly limited, and can be produced by any known or commonly used method. For example, the above-mentioned components may be mixed, stirred with a homomixer, and emulsified.

The emulsified skin cosmetic of the present invention can be produced by blending an oily component [component (B)] and a surfactant [component (D)] into a composition containing water [component (E)] as a medium. form. In the emulsified composition, by combining dipentaerythrityl tetra(hydroxystearic acid/isostearic acid) [ingredient (A1)] and dipentaerythrityl hexahydroxystearate [ingredient (A2)], the emulsified skin cosmetic of the present invention can be obtained. After the emulsified skin cosmetic is applied to the skin, the emulsified skin cosmetic can maintain non-stickiness and provide an excellent moisturizing feeling and long-lasting moisturizing feeling. Component (A1) and component (A2) are both components that provide a moisturizing feeling, but when used in combination, the moisturizing feeling and the sustainability of the moisturizing feeling are superior to when only one is blended. Furthermore, since the amounts of each of component (A1) and component (A2) can be suppressed, it is also excellent in non-stickiness. Furthermore, the blending of polyhydric alcohol [ingredient (C)] provides an excellent moisturizing feeling. In particular, by using a combination of glycerin and/or polyglycerin [component (C1)] and dihydric alcohol [component (C2)] as component (C), stickiness can be suppressed more than when only one is used. At the same time, an even higher moisturizing feeling can be imparted. Furthermore, since the amounts of each of component (C1) and component (C2) can be suppressed, it is also excellent in non-stickiness.

The present invention will be explained in more detail below based on Examples, but the present invention is not limited only to these Examples. The blending amounts listed in the table are the blending amounts of each component (that is, the blending amount of the active ingredient in each raw material, the so-called pure content), and are expressed in "mass %" unless otherwise specified.

Examples 1 to 9, Comparative Examples 1 to 6
Emulsified skin cosmetics of Examples and Comparative Examples were prepared using the components listed in Table 1 (components (A) to (E) and other components) in a conventional manner.

Details of the main components listed in the table are as follows.

<Component (A1)>
Tetra(hydroxystearic acid/isostearic acid) dipentaerythrityl: Product name “Cosmol EV”, manufactured by Nisshin Oilio Group Co., Ltd. <Ingredient (A2)>
Dipentaerythrityl hexahydroxystearate: Product name “Cosmol M”, manufactured by Nisshin Oilio Group Co., Ltd. <Ingredient (B1)>
Hydroxystearic acid hydrogenated castor oil: Product name “Technol MH”, manufactured by Yokoseki Oil Industry Co., Ltd.

(evaluation)
The emulsified skin cosmetics obtained in Examples and Comparative Examples were evaluated as follows. The evaluation results are listed in the table. The evaluation was conducted by three expert evaluators.

(Test Example 1: No stickiness, moisturizing feeling)
Approximately 0.5 g of each emulsified skin cosmetic was applied to the forearm by hand and blended. Immediately after application, the applied area was touched with a finger to evaluate the stickiness (sticky feeling) and moisturizing feeling of the skin, and the results were judged according to the following criteria.
[Criteria for determining non-stickiness]
◎ (Excellent): No stickiness felt at all.
○ (Good): Very slight stickiness is felt.
△ (usable): Slight stickiness is felt, but it is acceptable for practical use.
× (Poor): Stickiness was clearly felt, unpleasant, and practically unacceptable.
[Judgment criteria for moisturizing feeling]
○ (Good): The skin clearly feels more moist than before application.
× (Poor): There is almost no difference in skin moisture compared to before application.

(Test Example 2: Persistence of moisturizing feeling)
After 10 minutes had elapsed after the evaluation in Test Example 1, the applied area was touched with a finger to evaluate the moisturizing feeling, and the evaluation was made according to the following criteria.
[Judgment criteria for moisturizing feeling]
○ (Good): The skin clearly feels more moist than before application.
× (Poor): There is almost no difference in skin moisture compared to before application.

When the emulsified skin cosmetic (Example) of the present invention was used, it was evaluated to be excellent in moisturizing feeling, sustainability of moisturizing feeling, and lack of stickiness after application to the skin. On the other hand, both when [ingredient (A1)/{ingredient (A1)+ingredient (A2)}] was small and when it was high, the sustainability of the moisturizing feeling was evaluated to be poor (Comparative Examples 1 and 2). In addition, when component (A) is not included (Comparative Example 3), when hydroxystearate hydrogenated castor oil, which is a similar component, is blended instead of component (A1) (Comparative Example 4), component (A1) is blended. When not applied (Comparative Example 6), it was evaluated that the moisturizing feeling was poor in the first place. Furthermore, when component (A2) was not blended (Comparative Example 5), the durability of the moisturizing feeling was evaluated to be poor.

Example 10, Comparative Example 7
Each emulsified skin cosmetic was prepared using the components listed in Table 2 (components (A) to (E) and other components) in a conventional manner.

(evaluation)
The emulsified skin cosmetics obtained in Example 10 and Comparative Example 7 were evaluated for non-stickiness, moisturizing feel, and sustainability of moisturizing feeling as described above. The evaluation was conducted by three expert evaluators. As a result, no stickiness was felt in any case, and the product was evaluated as having excellent non-stickiness. On the other hand, regarding other evaluations, it was felt that Example 10 had a slightly higher moisturizing feeling than Comparative Example 7, and that the sustainability of the moisturizing feeling was clearly higher. That is, Example 10 was evaluated to be superior to Comparative Example 7 in which component (A2) was not blended in the moisturizing feeling and the sustainability of the moisturizing feeling.

Furthermore, formulation examples of the emulsified skin cosmetic of the present invention are shown below.

Formulation example 1: Moisturizing cream Tetra (hydroxystearic acid/isostearic acid) dipentaerythrityl
0.25% by mass
Dipentaerythrityl hexahydroxystearate 0.75% by mass
Setanol 4.0% by mass
Behenyl alcohol 4.0% by mass
Shea butter 1.0% by mass
Cetyl 2-ethylhexanoate 5.0% by mass
Methylpolysiloxane 5.0% by mass
Glycerin 4.0% by mass
1,3-butylene glycol 2.0% by mass
Glyceryl stearate 2.0% by mass
Polyglyceryl-10 pentasteate 0.5% by mass
Ethanol 4.0% by mass
Carboxyvinyl polymer 0.2% by mass
Potassium hydroxide 0.15% by mass
Sodium hyaluronate 0.1% by mass
Hydrolyzed sodium hyaluronate 0.05% by mass
Hydroxypropyltrimonium hyaluronate 0.05% by mass
Edetate disodium 0.01% by mass
1,2-octanediol 0.15% by mass
Purified water Total balance 100% by mass

Formulation example 2: Sunscreen cream Tetra (hydroxystearic acid/isostearic acid) dipentaerythrityl
0.5% by mass
Dipentaerythrityl hexahydroxystearate 0.5% by mass
Setanol 3.5% by mass
Stearyl alcohol 2.5% by mass
Vaseline 0.5% by mass
Pentaerythrityl tetraethylhexanoate 5.0% by mass
Methylphenylpolysiloxane 3.0% by mass
Glycerin 3.0% by mass
Dipropylene glycol 3.0% by mass
Polyglycerin modified silicone 1.0% by mass
Polyoxyethylene hydrogenated castor oil 1.5% by mass
Xanthan gum 0.2% by mass
(Acrylates/alkyl acrylate) crosspolymer 0.2% by mass
Potassium hydroxide 0.15% by mass
Isopropyl methoxycinnamate 1.0% by mass
4-tert-butyl-4'-methoxybenzoylmethane 1.0% by mass
Ethanol 3.0% by mass
Edetate disodium 0.15% by mass
Tocopherol acetate 0.05% by mass
Sodium ascorbate 0.05% by mass
l-menthol 0.2% by mass
Methylparaben 0.1% by mass
Propylparaben 0.05% by mass
Fragrance Appropriate amount Purified water Balance total 100% by mass

Formulation example 3: Emulsion Tetra (hydroxystearic acid/isostearic acid) dipentaerythrityl
0.2% by mass
Dipentaerythrityl hexahydroxystearate 0.4% by mass
Setanol 1.0% by mass
Vaseline 2.0% by mass
Beeswax 0.2% by mass
Squalane 5.0% by mass
Dimethylpolysiloxane 2.0% by mass
Glycerin 5.0% by mass
1,3-butylene glycol 3.0% by mass
Polyglycerin fatty acid ester 1.0% by mass
Polyethylene glycol monostearate 1.0% by mass
Ethanol 4.0% by mass
Hydroxypropyl methylcellulose 0.2% by mass
Sodium polyphosphate 0.03% by mass
Phenoxyethanol 0.3% by mass
Tocopherol acetate 0.1% by mass
Aloe extract (appropriate amount) Fragrance (appropriate amount) Purified water (remainder total) 100% by mass

Prescription example 4: Whitening cream Tetra (hydroxystearic acid/isostearic acid) dipentaerythrityl
0.4% by mass
Dipentaerythrityl hexahydroxystearate 0.4% by mass
Stearic acid 0.5% by mass
Myristyl alcohol 0.4% by mass
Mineral oil 3.0% by mass
Dimethylpolysiloxane 2.0% by mass
Polyglycerin 2.0% by mass
1,3-propanediol 2.0% by mass
Glyceryl stearate 2.0% by mass
Polysorbate-60 0.5% by mass
Carboxyvinyl polymer 0.4% by mass
Sodium hydroxide 0.13% by mass
Guar gum 0.25% by mass
1,2-octanediol 0.5% by mass
Octoxyglycerin 0.02% by mass
Tranexamic acid 2.0% by mass
Dipotassium glycyrrhizinate 0.05% by mass
Sodium hyaluronate 0.1% by mass
Sodium ascorbate 0.5% by mass
Nicotinic acid amide 0.05% by mass
Arbutin Appropriate amount Chamomilla extract Appropriate amount Saxifrage extract Appropriate amount Fragrance Appropriate amount Purified water Balance total 100% by mass

Claims (1)

Contains the following component (A1), the following component (A2), the following component (B), the following component (C), the following component (D), and the following component (E),
The total content of the component (A1) and the component (A2) is 0.5 to 1.5% by mass,
The content ratio of the component (B) is 2.0 to 40.0% by mass,
The content of the component (C) is 2.0 to 30.0% by mass,
The content ratio of the component (D) is 1.0 to 5.0% by mass,
The mass ratio of the component (A1) to the total amount of the component (A1) and the component (A2) [component (A1)/{component (A1) + component (A2)}] is 0.13 to 0.6. Yes,
The component (B) contains the following component (B1) and the following component (B2), and the mass ratio of the component (B1) to the total amount of the component (B1) and the component (B2) [component (B1)/ {component (B1) + component (B2)}] is 0.1 to 5.0,
An emulsified skin cosmetic in which the component (C) contains the following component (C1) and/or the following component (C2) .
Component (A1): Dipentaerythrityl tetra(hydroxystearic acid/isostearate) Component (A2): Dipentaerythrityl hexahydroxystearate Component (B): Oily components other than component (A1) and component (A2)
Component (B1): Oily component that is solid or paste at 25°C
Component (B2): Oily component that is liquid at 25°C
Component (C): Polyhydric alcohol
Component (C1): Glycerin and/or polyglycerin
Component (C2): Dihydric alcohol
Component (D): Surfactant Component (E): Water