Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/04—Dispersions; Emulsions
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
  • A61K8/365—Hydroxycarboxylic acids; Ketocarboxylic acids
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/37—Esters of carboxylic acids

Definitions

• the present invention relates to a metal oxide dispersion composition, and more specifically to a metal oxide dispersion composition that has excellent stability over time, is non-sticky, and has good usability.
• Metal oxides contained in cosmetics and paints are used as raw materials with various functions.
• these metal oxides have the characteristic that they can achieve various effects depending on the size (average particle diameter), and those with a large average particle diameter are sometimes used as white pigments as colorants, while those with a small average particle diameter have excellent ultraviolet protection properties and are used in sunscreen cosmetics, etc.
• the smaller the average particle diameter the worse the dispersibility in the composition tends to be, and the more likely the metal oxides are to form aggregates.
• a technique has been proposed in which the surface of metal oxides is treated to increase the degree of hydrophobicity and improve dispersibility.
• Techniques that have been proposed include a technique for improving dispersibility by performing surface treatment with compounds that are solid and liquid at room temperature (see, for example, Patent Document 1), and a technique for improving dispersibility by performing surface treatment with alkylalkoxysilane (see Patent Document 2).
• Patent Document 1 has a problem that the surface treatment of a solid compound results in a lack of smoothness when applied to the skin, and poor spreadability.
• the technique of Patent Document 2 has a problem that a large amount of silicone oil must be contained in the oil phase, and it is difficult to contain oils with poor compatibility, such as solid ultraviolet absorbers, and the formulation range is limited.
• the techniques of Patent Document 1 and Patent Document 2 have a concern of gelation over time, so it has been impossible to obtain a composition that does not gel over time, has excellent stability over time, is non-sticky, and has good usability.
• the metal oxide dispersion composition of the present invention has excellent stability over time, is non-sticky, and has good usability.
• the inventors of the present invention have conducted extensive research to solve the above problems, and as a result have discovered that by using a combination of a silicone-treated metal oxide, polyhydroxystearic acid, and glyceryl oleate, a metal oxide dispersion composition that is stable over time and has excellent non-stickiness can be obtained, thus completing the present invention.
• the present invention provides: The following components (A) to (C):
• the present invention provides a metal oxide dispersion composition comprising (A) polyhydroxystearic acid, (B) a silicone-treated metal oxide, and (C) glyceryl oleate, wherein the metal oxide of component (B) is a metal oxide other than titanium oxide.
• the content mass ratio (B)/ ⁇ (A)+(C) ⁇ of the component (B) to the total content of the component (A) and the component (C) may be less than 12.
• the component (B) may be a dimethylpolysiloxane-treated metal oxide.
• the content of the component (B) may be 20 to 80 mass %.
• the mass ratio (B)/(C) of the component (B) to the component (C) may be 1 to 30.
• the mass ratio (A)/(C) of the component (A) to the component (C) may be 0.1 to 3.0.
• the metal oxide of component (B) may be zinc oxide.
• the metal oxide dispersion composition may further contain component (D), a polyhydric alcohol.
• the present invention relates to There is also provided a cosmetic or topical skin preparation containing the metal oxide dispersion composition.
• the cosmetic preparation or the topical skin preparation may be an oil-in-water emulsion type.
• the cosmetic or topical skin preparation may be used as a sunscreen.
• the present invention also provides a method for producing a method for manufacturing a semiconductor device comprising the steps of:
• the present invention also provides a cosmetic or skin topical preparation comprising (A) polyhydroxystearic acid, (B) a silicone-treated metal oxide, and (C) glyceryl oleate, wherein the metal oxide of component (B) is a metal oxide other than titanium oxide.
• the content mass ratio (B)/ ⁇ (A)+(C) ⁇ of the component (B) to the total content of the component (A) and the component (C) may be less than 12.
• the component (B) may be a dimethylpolysiloxane-treated metal oxide.
• the content of the component (B) may be 1 to 35% by mass.
• the mass ratio (B)/(C) of the component (B) to the component (C) may be 1-30.
• the mass ratio (A)/(C) of the component (A) to the component (C) may be 0.1 to 3.0.
• the metal oxide of component (B) may be zinc oxide.
• the cosmetic or topical skin preparation may further contain component (D) a polyhydric alcohol.
• the component (D) may be glycerin.
• the cosmetic or topical skin preparation may be an oil-in-water emulsion type.
• the cosmetic or topical skin preparation may be used as a sunscreen.
• the metal oxide dispersion composition of the present invention has excellent stability over time, is non-sticky, and has good usability. Furthermore, by using a combination of component (A) polyhydroxystearic acid and component (C) glyceryl oleate, the metal oxide dispersion composition of the present invention can be made to have excellent stability over time, excellent non-stickiness, and good usability, even in the case of using a silicone-treated metal oxide, which is a surface treatment based on physical adsorption, the adsorption strength of which is weaker than that of chemical adsorption.
• Example 1 shows external appearance photographs of the oil-in-water emulsion cosmetics of Example 8 (left) and Comparative Example 6 (right).
• ⁇ means a range including the numerical values before and after it.
• numerical values expressed as % are values based on mass unless otherwise specified.
• the embodiments described below show representative embodiments of the present invention, and the scope of the present invention is not limited to these embodiments.
• First embodiment (1) Structure of the metal oxide dispersion composition (2) Each component (3) Manufacturing method of the metal oxide dispersion composition (4) Uses 2.
• Second embodiment (1) Structure of the cosmetic preparation (2) Each component (3) Manufacturing method of the cosmetic preparation (4) Uses 3.
• Third embodiment (1) Structure of the topical skin preparation (2) Each component (3) Manufacturing method of the topical skin preparation (4) Uses 4.
• Fourth embodiment (1) Structure of the cosmetic preparation (2) Each component (3) Manufacturing method of the cosmetic preparation (4) Uses 5.
• Fifth embodiment (1) Structure of the topical skin preparation (2) Each component (3) Manufacturing method of the topical skin preparation (4) Uses 6. Examples
• the measurements are performed in an environment of 25°C ⁇ 2°C and 50% RH ⁇ 5% RH.
• the metal oxide dispersion composition of the present embodiment contains component (A) polyhydroxystearic acid, component (B) silicone-treated metal oxide, and component (C) glyceryl oleate, and the metal oxide of component (B) is a metal oxide other than titanium oxide.
• component (A) polyhydroxystearic acid, component (B) silicone-treated metal oxide, and component (C) glyceryl oleate and the metal oxide of component (B) is a metal oxide other than titanium oxide.
• Component (A) polyhydroxystearic acid in this embodiment is a polymer of hydroxystearic acid having a hydroxyl group.
• Component (A) polyhydroxystearic acid is used to disperse component (B) silicone-treated metal oxide, and the hydroxyl group of the hydroxystearic acid is preferably at the 12th position, and the degree of polymerization of the hydroxystearic acid is preferably 3 to 12, and more preferably 4 to 8.
• Examples of commercially available products include Salacos HS-6C (manufactured by Nisshin Oillio Group, Ltd.) and ARLACEL P-100 (manufactured by Uniqema Co., Ltd.).
• the metal oxide is a metal oxide other than titanium oxide that blocks ultraviolet rays by absorbing, scattering, reflecting, quenching, etc., a wide range of ultraviolet rays from UVB to UVA (290 to 400 nm), and is not particularly limited as long as it is one that is normally used in cosmetics, quasi-drugs, pharmaceuticals, etc.
• the metal oxide one or more types selected from the group consisting of zinc oxide, cerium oxide, iron oxide, and chromium oxide can be preferably used in terms of ease of availability on the market, and one or more types selected from the group consisting of zinc oxide and cerium oxide can be more preferably used in terms of ultraviolet protection effect, etc., and zinc oxide can be particularly preferably used.
• the metal oxide can contain a trace element with a valence of +2 or more, and metals such as iron, zirconium, calcium, manganese, magnesium, and yttrium can be contained in the metal oxide alone or in appropriate combination of two or more types.
• the average particle size can be measured by image analysis of a transmission electron microscope image. The method for measuring the average particle size is described below.
• the metal oxide is not particularly limited, but examples of zinc oxide that are commercially available include FINEX-25 (manufactured by Sakai Chemical Industry Co., Ltd.), FINEX-50 (manufactured by Sakai Chemical Industry Co., Ltd.), FINEX-75 (manufactured by Sakai Chemical Industry Co., Ltd.), MZ300 series (manufactured by Teika Corporation), MZ500 series (manufactured by Teika Corporation), MZ700 series (manufactured by Teika Corporation), and ZnO-350 (manufactured by Sumitomo Osaka Cement Co., Ltd.).
• cerium oxide include high-purity cerium sold by Nikki Co., Ltd. or Seimi Chemical Co., Ltd.
• component (C) Glyceryl oleate may be one or more selected from the group consisting of glyceryl monooleate, glyceryl dioleate, and glyceryl trioleate.
• the glyceryl oleate preferably includes glyceryl monooleate, and more preferably is glyceryl monooleate.
• the metal oxide dispersion composition of the present embodiment may further contain a polyhydric alcohol as component (D).
• a polyhydric alcohol as component (D).
• Such polyhydric alcohols are not particularly limited, but include sugar alcohols such as sorbitol and mannitol, as well as glyceryl, glycerin, 1,3-butylene glycol, dipropylene glycol, and tripropylene glycol. Glyceryl is particularly preferred as such a polyhydric alcohol.
• the metal oxide dispersion composition of this embodiment can contain powders, surfactants, oils, gelling agents, antioxidants, preservatives, colorants, fragrances, cosmetic ingredients, etc. other than those mentioned above, within the quantitative and qualitative ranges that do not impair the effects of this embodiment depending on the purpose. Details will be described in the second embodiment.
• the content of component (A) is preferably 1 to 15% by mass (hereinafter abbreviated as "%"), more preferably 2 to 10%, even more preferably 2 to 9%, even more preferably 3 to 9%, and particularly preferably 4 to 9%. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the content of component (B) is preferably 20 to 80% by mass (hereinafter abbreviated as "%"), more preferably 30 to 80%, even more preferably 40 to 80%, and even more preferably 40 to 70%. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the content of component (C) is preferably 1 to 15% by mass (hereinafter abbreviated as "%"), more preferably 2 to 13%, even more preferably 2.5 to 12%, even more preferably 3 to 12%, and particularly preferably 3 to 10%. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the mass ratio (A)/(C) of the component (A) to the component (C) is preferably 0.1 to 3.0, more preferably 0.2 to 2.8, even more preferably 0.3 to 2.5, even more preferably 0.4 to 2.4, and particularly preferably 0.5 to 2.0. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the content of component (D) is preferably 0.1 to 5 mass% (hereinafter abbreviated as "%"), more preferably 0.3 to 4%, even more preferably 0.5 to 3%, and even more preferably 0.5 to 2%. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the method for producing the metal oxide dispersion composition of this embodiment is not particularly limited, but can be obtained, for example, by mixing component (A), component (C), and an optional component, adding component (B) to the mixture, and uniformly dispersing the mixture.
• Optional components include component (D) and oils.
• equipment for uniformly dispersing the mixture include a disperser mixer, homomixer, roll mill, ball mill, and bead mill, but wet grinding equipment using a medium such as a roll mill, ball mill, or bead mill is more preferred.
• the metal oxide dispersion composition of this embodiment can be used in pharmaceuticals such as topical skin preparations, paints, inks, optical filters, and inlay paper.
• the cosmetic of this embodiment contains the metal oxide dispersion composition of the first embodiment.
• the content of the metal oxide dispersion composition in the cosmetic of this embodiment is preferably 5 to 40%, more preferably 10 to 30%, even more preferably 10 to 25%, and even more preferably 10 to 20%. That is, the cosmetic of this embodiment contains component (A) polyhydroxystearic acid, component (B) a silicone-treated metal oxide, and component (C) glyceryl oleate, and the metal oxide of component (B) is a metal oxide other than titanium oxide.
• component (A) polyhydroxystearic acid component (B) a silicone-treated metal oxide
• component (C) glyceryl oleate component (B) is a metal oxide other than titanium oxide.
• component (A) polyhydroxystearic acid, component (B) silicone-treated metal oxide, component (C) glyceryl oleate, and component (D) polyhydric alcohol described in the first embodiment above also applies to this embodiment, so the explanation will be omitted.
• components that are normally blended in cosmetics can be appropriately blended in order to impart various effects, such as water, oils, powders such as inorganic pigments, organic pigments, and extender pigments, aqueous components such as surfactants, lower alcohols, water-soluble polymers, and moisturizers, sugars, ultraviolet absorbers, antioxidants, discoloration inhibitors, preservatives, medicinal ingredients, stabilizers, pigments, fragrances, etc., other than the above-mentioned components, within a range that does not impair the effects of this embodiment.
• aqueous components such as surfactants, lower alcohols, water-soluble polymers, and moisturizers, sugars, ultraviolet absorbers, antioxidants, discoloration inhibitors, preservatives, medicinal ingredients, stabilizers, pigments, fragrances, etc.
• each component may be blended separately, without preparing the above-mentioned components into a metal oxide dispersion composition, as necessary, within a range that does not impair the effects of this embodiment .
• the content of component (A) is preferably 0.05 to 6% by mass (hereinafter abbreviated as "%"), more preferably 0.1 to 4%, even more preferably 0.2 to 3%, even more preferably 0.4 to 2.5%, and particularly preferably 0.5 to 2%. Within this range, it is possible to provide even better stability over time and good usability without stickiness.
• the content mass ratio (B)/ ⁇ (A)+(C) ⁇ of the component (B) relative to the total content of the component (A) and the component (C) is preferably less than 12, more preferably 10 or less, even more preferably 9 or less, even more preferably 8 or less, particularly preferably 7 or less, and even more particularly preferably 6 or less. Within this range, it is possible to provide good usability without stickiness and improve stability over time.
• the lower limit of the content mass ratio (B)/ ⁇ (A)+(C) ⁇ is not particularly limited because the total amount of the components (A) and (C) relative to the component (B) becomes excessive, improving stability, but is usually preferably 1 or more, more preferably 2 or more, even more preferably 3 or more, even more preferably 3.5 or more, and particularly preferably 3.8 or more.
• the content of component (C) is preferably 0.05 to 6% by mass (hereinafter abbreviated as "%"), more preferably 0.1 to 4%, even more preferably 0.15 to 3%, even more preferably 0.2 to 2%, particularly preferably 0.3 to 2%, and even more particularly preferably 0.4 to 2%. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the mass ratio (B)/(C) of the component (B) to the component (C) is preferably 1 to 30, more preferably 2 to 28, even more preferably 4 to 25, even more preferably 6 to 20, particularly preferably 6 to 16, and even more particularly preferably 6 to 15. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the mass ratio (A)/(C) of the component (A) to the component (C) is preferably 0.1 to 3.0, more preferably 0.2 to 2.8, even more preferably 0.3 to 2.5, even more preferably 0.4 to 2.4, and particularly preferably 0.5 to 2.0. Within this range, better stability over time and good usability without stickiness can be achieved.
• the cosmetic of this embodiment is an oil-in-water emulsion type, it contains water.
• the water is used as a dispersion medium, and is not particularly limited, but examples include purified water, distilled water, ion-exchanged water, tap water, hot spring water, deep sea water, etc.
• the amount of water contained in the cosmetic is not particularly limited, but it is preferable that the amount is 40% or more.
• oils to be blended in the cosmetic of this embodiment are not particularly limited and may be any oil normally used in cosmetics, and oily components such as higher alcohols, fatty acids, hydrocarbon oils, ester oils, and silicones may be used.
• oily components such as higher alcohols, fatty acids, hydrocarbon oils, ester oils, and silicones may be used.
• ester oils waxes such as beeswax, carnauba wax, candelilla wax, and spermaceti wax, vegetable oils and fats typified by palm oil, palm kernel oil, olive oil, safflower oil, soybean oil, and cottonseed oil, animal oils such as beef tallow, beef leg fat, beef bone fat, hardened beef tallow, hardened oil, turtle oil, lard, horse fat, mink oil, liver oil, and egg yolk oil, lanolin, liquid lanolin, reduced lanolin, lanolin alcohol, hard lanolin, lanolin acetate, and lanolin derivatives such as isopropyl fatty acid, methylpolysiloxane, methylphenylpolysiloxane, Examples of the silicones include silicones such as polyoxyalkylene-alkylmethylpolysiloxane-methylpolysiloxane copolymers, alkoxy-modified polysiloxanes, alkyl-modified polys
• the cosmetic of this embodiment may contain powder components other than component (B).
• the powders contained in the cosmetic are not particularly limited by shape, such as spherical, plate-like, or needle-like, particle size, such as aerosol, fine particles, or pigment-grade, or particle structure, such as porous or nonporous, and may include inorganic powders, glittering powders, organic powders, pigment powders, metal powders, and composite powders.
• white inorganic pigments such as titanium oxide, zinc oxide, cerium oxide, and barium sulfate
• colored inorganic pigments such as iron oxide, carbon black, titanium-titanium oxide sintered product, chromium oxide, chromium hydroxide, iron blue, ultramarine, and other colored inorganic pigments
• talc muscovite, phlogopite, red mica, black mica, synthetic mica, sericite (sericite), synthetic sericite, silicon carbide, silicon dioxide, aluminum oxide, magnesium oxide, zirconium oxide, antimony oxide, diatomaceous earth, aluminum silicate, aluminum magnesium metasilicate, calcium silicate, barium silicate, magnesium silicate, magnesium silicate, calcium silicate, barium silicate, magnesium silicate, calcium ...
• White body powders such as magnesium, calcium carbonate, magnesium carbonate, hydroxyapatite, boron nitride, clay minerals such as kaolin, bentonite, smectite, hectorite, montmorillonite, and their organically modified products, titanium oxide-coated mica, titanium oxide-coated bismuth oxychloride, iron oxide titanium mica, Prussian blue-treated titanium mica, carmine-treated titanium mica, bismuth oxychloride, fish scale foil, polyethylene terephthalate-aluminum-epoxy laminate powder, polyethylene terephthalate-polyolefin laminate film powder, polyethylene terephthalate powder of polymethylmethacrylate laminated film, and titanium oxide-coated glass flakes and other photoluminescent powders; organic polymer resin powders such as polyamide resins, polyethylene resins, polyacrylic resins, polyester resins, fluorine resins, cellulose resins, polystyrene resins, copolymer resin
• the powder examples include organic pigment powders such as Red No. 05, Red No. 226, Red No. 228, Orange No. 203, Orange No. 204, Blue No. 404, and Yellow No. 401; organic pigment powders such as zirconium, barium, or aluminum lakes such as Red No. 3, Red No. 104, Red No. 106, Orange No. 205, Yellow No. 4, Yellow No. 5, Green No. 3, and Blue No. 1; metal powders such as aluminum powder, gold powder, and silver powder; and composite powders such as fine titanium oxide-coated mica titanium, fine zinc oxide-coated mica titanium, barium sulfate-coated mica titanium, titanium oxide-containing silicon dioxide, and zinc oxide-containing silicon dioxide.
• These powders can be used alone or in combination, or may be further combined. These powders may be surface-treated with one or more of fluorine-based compounds, silicone-based compounds, metal soaps, lecithin, hydrogenated lecithin, collagen, hydrocarbons, higher fatty acids, higher alcohols, esters, waxes, waxes, and surfactants.
• the cosmetic of this embodiment may contain a surfactant, and examples of the surfactant to be contained in the cosmetic include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.
• examples of nonionic surfactants include polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil, hydrogenated castor oil, polyoxyethylene sorbitol tetra fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, polyglycerin fatty acid esters, sucrose fatty acid esters, alkyl polyglucosides, N-alkyl dimethylamine oxide polyoxyethylene glycerin fatty acid esters, polyoxyethylene cholesteryl ethers, polyoxyethylene phytosteryl ethers, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene alkyl phenyl ethers,
• anionic surfactants include sodium salts or triethanolamine salts of fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, and isostearic acid; N-acyl methyl taurine salts such as sodium cocoyl methyl taurate, sodium lauroyl methyl taurate, sodium myristoyl methyl taurate, sodium palmitoyl methyl taurate, and sodium stearoyl methyl taurate; and polyoxyethylene alkyl ether phosphates such as polyoxyethylene lauryl ether phosphate, polyoxyethylene cetyl ether phosphate, polyoxyethylene oleyl ether phosphate, and polyoxyethylene nonylphenyl ether phosphate.
• fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, and isostearic acid
• N-acyl methyl taurine salts such as sodium cocoyl methyl taurate, sodium lauroyl methyl taurate, sodium myristoy
• amphoteric surfactants include coconut oil fatty acid amidopropyl betaine, octyl dimethylamino acetic acid betaine, lauric acid amidopropyl betaine, coconut oil fatty acid alkyl dimethylamino acetic acid betaine, myristyl dimethylamino acetic acid betaine, cetyl dimethylamino acetic acid betaine, coconut oil fatty acid amidopropyl dimethylamino acetic acid betaine, lauric acid amidopropyl dimethylamino acetic acid betaine, lauryl dihydroxyethyl amino acetic acid betaine, cetyl dihydroxyethyl amino acetic acid betaine, coconut oil alkyl sulfobetaine, lauryl sulfobetaine, N-coconut oil
• betaine-based fatty acid acyl-N-carboxymethyl-N-hydroxyethylethylenediamine sodium N-coconut oil fatty acid
• the cosmetic of the present embodiment may contain a water-soluble polymer.
• the water-soluble polymer that may be contained in the cosmetic include natural polymers such as guar gum, sodium chondroitin sulfate, sodium hyaluronate, gum arabic, xanthan gum, sodium alginate, and carrageenan, semi-synthetic polymers such as methylcellulose, hydroxyethylcellulose, and carboxymethylcellulose, carboxyvinyl polymers, alkyl-added carboxyvinyl polymers, polyvinyl alcohol, polyvinylpyrrolidone, sodium polyacrylate, (sodium acrylate/acryloyldimethyltaurate), and the like.
• the cosmetic of this embodiment may contain additives, and examples of additives that may be contained in the cosmetic include antioxidants such as ⁇ -tocopherol and ascorbic acid, vitamins, anti-inflammatory agents, beauty ingredients such as herbal medicines, and preservatives such as paraoxybenzoic acid esters and phenoxyethanol.
• the method for producing the cosmetic of this embodiment is not particularly limited, but for example, a mixture of a metal oxide dispersion composition containing components (A), (B), and (C) and an optional oil agent is added to a homogeneously mixed surfactant and aqueous component to emulsify, and the resulting mixture is then filled into a container or mold to obtain the cosmetic.
• the cosmetic of this embodiment may be in a liquid, semi-solid, or solid form, although it is not particularly limited.
• the formulation and product form are not particularly limited, and may be in the form of a water-in-oil emulsion, an oil-in-water emulsion, a water dispersion, or a powder, with an oil-in-water emulsion being particularly preferred.
• the content of component (B) is preferably 1 to 35% by mass (hereinafter abbreviated as "%"), more preferably 1 to 30%, even more preferably 2 to 28%, even more preferably 4 to 20%, and particularly preferably 4 to 15%. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the content of component (C) is preferably 0.05 to 6% by mass (hereinafter abbreviated as "%"), more preferably 0.1 to 4%, even more preferably 0.15 to 3%, even more preferably 0.2 to 2%, particularly preferably 0.3 to 2%, and even more particularly preferably 0.4 to 2%. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the mass ratio (B)/(C) of the component (B) to the component (C) is preferably 1 to 30, more preferably 2 to 28, even more preferably 4 to 25, even more preferably 6 to 20, particularly preferably 6 to 16, and even more particularly preferably 6 to 15. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the mass ratio (A)/(C) of the component (A) to the component (C) is preferably 0.1 to 3.0, more preferably 0.2 to 2.8, even more preferably 0.3 to 2.5, even more preferably 0.4 to 2.4, and particularly preferably 0.5 to 2.0. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the content of component (D) is preferably 0.1 to 10% by mass (hereinafter abbreviated as "%"), more preferably 0.3 to 8%, even more preferably 0.5 to 6%, even more preferably 0.5 to 4%, and particularly preferably 0.5 to 3%. Within this range, even better stability over time and good usability without stickiness can be achieved.
• the method for producing the topical skin preparation of this embodiment is not particularly limited, and the preparation is carried out by a conventional method.
• the preparation may be carried out by adding the above-mentioned components (A) to (C) and, if necessary, the above-mentioned optional components, and mixing them.
• the topical skin preparation of this embodiment can be implemented in various forms, such as liquid, gel, cream, solid, mousse, etc., and may be stored in a container capable of spraying in mist form and used by spraying in mist form.
• the dosage form of this embodiment is not particularly limited to solubilized type, oil-in-water emulsion type, water-in-oil emulsion type, oil-based type, water-in-oil-in-water type, oil-in-water-in-oil type, multi-layer type, etc., but is particularly preferably an oil-in-water emulsion type.
• topical skin preparation of this embodiment there are no particular limitations on the uses of the topical skin preparation of this embodiment, and it can be used as a topical skin preparation with excellent anti-aging effects, etc.
• topical skin preparations of this embodiment are not particularly limited, and may be in any form, such as skin care cosmetics such as milk lotion, cream, lotion, serum, sunscreen, and pack; makeup cosmetics such as foundation, blusher, lipstick, eye color, mascara, eyeliner, and nail polish; hair cosmetics such as hair care products, hair tonic, shampoo, rinse, and hair wax; cleansing agents such as facial cleansers; topical gels, creams, ointments, liquids, liniments, poultices, and aerosols.
• topical skin preparations that include sunscreen applications such as sunscreen, foundation, and daytime serum are topical skin preparations that are likely to exhibit the effects of this embodiment.
• the cosmetic composition of this embodiment contains component (A) polyhydroxystearic acid, component (B) a silicone-treated metal oxide, and component (C) glyceryl oleate, and the metal oxide of component (B) is a metal oxide other than titanium oxide.
• component (A) polyhydroxystearic acid, component (B) silicone-treated metal oxide, component (C) glyceryl oleate, and component (D) polyhydric alcohol described above in the second embodiment also applies to this embodiment, so the explanation will be omitted.
• the cosmetic of this embodiment may contain, as necessary, ingredients that are normally blended into cosmetics, such as water, oils, powders of inorganic pigments, organic pigments, and extender pigments, aqueous components such as surfactants, lower alcohols, water-soluble polymers, and moisturizers, sugars, UV absorbers, antioxidants, discoloration inhibitors, preservatives, medicinal ingredients, stabilizers, pigments, and fragrances, other than the above-mentioned ingredients, in order to impart various effects, within the scope of not impairing the effects of this embodiment.
• ingredients that are normally blended into cosmetics such as water, oils, powders of inorganic pigments, organic pigments, and extender pigments, aqueous components such as surfactants, lower alcohols, water-soluble polymers, and moisturizers, sugars, UV absorbers, antioxidants, discoloration inhibitors, preservatives, medicinal ingredients, stabilizers, pigments, and fragrances, other than the above-mentioned ingredients, in order to impart various effects, within the
• the method for producing the cosmetic of this embodiment is not particularly limited, but for example, a mixture of components (A), (B), (C) and an optional oil agent can be added to a homogeneously mixed surfactant or aqueous component to emulsify, and then the resulting mixture can be filled into a container or mold to obtain the cosmetic.

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