Abstract: The invention provides a novel oil thickener that can impart a thickening effect for oils used in cosmetics, and a novel oil-soluble copolymer that can be used as the thickener. The cosmetic oil thickener of the invention is an oil-soluble copolymer having a monomer unit composed of a hydrophilic monomer, a monomer unit composed of an easily-crystallizing hydrophobic monomer, and a monomer unit composed of a poorly-crystallizing hydrophobic monomer.

Abstract: To provide a water-in-oil emulsified composition which highly encapsulates a water content, has high viscosity, and is excellent in emulsification stability. The water-in-oil emulsified composition of the present disclosure comprises a dispersion medium comprising an oil content, and an oil-soluble copolymer having a monomer unit obtained from a specific hydrophilic monomer, and a monomer unit obtained from a specific hydrophobic monomer; and water droplets dispersed in the dispersion medium, wherein the oil content contains 60% by mass or more of polar oil with an IOB of 0.10 or more, and wherein the water droplets contain water and a surfactant, and the content of the water is 30% by mass or more based on the total amount of the composition.

Abstract: The present invention provides an oil-in-water emulsion cosmetic, particularly a skin care cosmetic such as a skin lotion or a milky lotion, that has a large water fraction and a small oil fraction, exhibits an excellent stability over time while having an optimal feeling of use on the skin, and can provide an elasticity to the skin. An oil-in-water emulsion cosmetic according to the present invention is characterized by comprising: (a) a carboxy-modified silicone; (b) a hydrophobized polyether urethane; and (c) a carboxyvinyl polymer.

Abstract: The invention provides a novel oil thickener that can impart a thickening effect for oils used in cosmetics, and a novel oil-soluble copolymer that can be used as the thickener. The cosmetic oil thickener of the invention is an oil-soluble copolymer having a monomer unit composed of a hydrophilic monomer, a monomer unit composed of an easily-crystallizing hydrophobic monomer, and a monomer unit composed of a poorly-crystallizing hydrophobic monomer.

Abstract: A method of preparing a fine oil-in-water emulsion comprising an oil phase based on silicone and/or hydrocarbon oils, in which the oil phase particles have an average particle size of 150 nm or less. The emulsion is stabilized by a carboxy-modified silicone in combination with a C16 to 22 higher alcohol; a nonionic surfactant having a POE chain and an HLB of 5 to 10; and a dihydric glycol. The emulsions can be prepared without the use of a high-pressure emulsifying apparatus.

Abstract: The present invention provides an ?-gel forming composition and an ?-gel composition that uses an ?-gel formation composition that is highly stable and that does not become colored or deposit crystals, etc. over time. An ?-gel composition includes (A) 25-50 mass % of one or more higher aliphatic alcohol and/or higher fatty acid has 16 or more carbons, (B) 40-70 mass % of a specific polyoxyethylene sterol ether, and (C) 5-20 mass % of a specific polyoxyethylene dialkyl ester and/or ether. The ?-gel composition is generated by adding water.

Abstract: An object to be solved by the present invention is to provide a composition for forming ?-gel which has a high stability with no color development or crystal deposition over time, and a ?-gel composition using the same. The ?-gel composition comprises: (A) 25 to 50% by mass of 1 or more higher aliphatic alcohols having 16 or more carbon atoms and/or higher fatty acids; (B) 40 to 70% by mass of specific polyoxyethylene sterol ether, and (C) 5 to 20% by mass of specific polyoxyethylene dialkyl ester and/or ether, and is generated by adding water.

Abstract: The invention provides a thick water-based cosmetic which can impart a novel usage feeling The thick water-based cosmetic of the present invention has a viscoelastic ratio of 10 or more and a viscosity of 500 mPa·s or less at a shear rate of 1/s, wherein when concentrated by a factor of five by drying to remove moisture, the thick water-based cosmetic changes to a gel-like form having a viscoelastic ratio of 0.5 or less and a viscosity of 70000 mPa·s or more at a shear rate of 1/s.

Abstract: The present invention addresses the problem of providing an ?-gel formation composition and an ?-gel composition that uses the ?-gel formation composition, wherein said compositions are highly stable, do not deposit crystals, become more viscous over time, and, when used in a preparations for external use, are refreshing during application and have high skin-moisturizing action after application. A gel composition that includes a polyoxyethylene dialkyl ester and/or a polyoxyethylene dialkyl ether, a polyoxyethylene alkyl ester and/or a polyoxyethylene alkyl ether, and, preferably, a polyoxyethylene sterol ether and water.

Abstract: The invention provides a novel oil-in-water fine emulsion cosmetic composition that is stable. The oil-in-water fine emulsion cosmetic composition of the invention, containing: a dispersion medium that contains water and a divalent glycol; an oil component that is dispersed in the dispersion medium and contains a silicone oil and a hydrocarbon oil; a carboxy-modified silicone-based surfactant represented by the following Formula 1; at least one selected from a higher alcohol and a higher fatty acid that are liquid at 25° C.

Abstract: Copolymers derived from hydrophobic monomers of formula (1), and hydrophilic monomers of formulas (2) and (3), are provided The copolymers are useful as gelling agents for oils used in cosmetics and cosmetic emulsions.

Abstract: A method of preparing a fine oil-in-water emulsion comprising an oil phase based on silicone and/or hydrocarbon oils, in which the oil phase particles have an average particle size of 150 nm or less. The emulsion is stabilized by a carboxy-modified silicone in combination with a C16 to 22 higher alcohol; a nonionic surfactant having a POE chain and an HLB of 5 to 10; and a dihydric glycol. The emulsions can be prepared without the use of a high-pressure emulsifying apparatus.

Abstract: The present invention addresses the problem of providing an ?-gel formation composition and an ?-gel composition that uses the ?-gel formation composition, wherein said compositions are highly stable, do not deposit crystals, become more viscous over time, and, when used in a preparations for external use, are refreshing during application and have high skin-moisturizing action after application. A gel composition that includes a polyoxyethylene dialkyl ester and/or a polyoxyethylene dialkyl ether, a polyoxyethylene alkyl ester and/or a polyoxyethylene alkyl ether, and, preferably, a polyoxyethylene sterol ether and water.

Abstract: The present invention addresses the problem of providing a ripple-phase-containing composition, an ?-gel formation composition, and an ?-gel composition that uses the ?-gel formation composition, wherein said compositions are highly stable, do not deposit crystals, become more viscous over time, and, when used in a preparations for external use, are refreshing during application and have high skin-moisturizing action after application. A gel composition that includes a polyoxyethylene dialkyl ester and/or a polyoxyethylene dialkyl ether, a polyoxyethylene alkyl ester and/or a polyoxyethylene alkyl ether, and, preferably, a polyoxyethylene sterol ether and water.

Abstract: A fine emulsion-type cosmetic comprises a finely-emulsified oil phase mainly based on a silicone oil or hydrocarbon oil without use of a high-pressure emulsifying apparatus, and optionally has an average emulsion particle size of 150 nm or less comprising: an aqueous phase as a continuous layer; an oil phase dispersed in the aqueous phase and comprising 82% by mass or more of a silicone oil and a hydrocarbon oil therein; a carboxy-modified silicone represented by the following formula (1); a C16 to 22 higher alcohol; a nonionic surfactant having a POE chain and an HLB of 5 to 10; and a dihydric glycol; wherein R1 and R2 are respectively a functional group represented by —O—Si(R4)3 in which R4 is an alkyl group having 1 to 6 carbon atoms; R3 is a monovalent hydrocarbon group having 1 to 10 carbon atoms; M is a hydrogen atom, metal atom, or organic cation; A is a linear or branched alkylene group represented by CqH2q; and q is an integer of 6 to 20.

Abstract: The present invention provides a copolymer used as oily gelling agent with which a stable oily gelled composition can be prepared. The copolymer of the present invention is characterized by comprising a hydrophobic monomer represented by the following general formula (1) and a hydrophilic monomer represented by the following general formula (2) and/or the following general formula (3). (In formula (1), R1 is a straight-chain or branched-chain alkyl group having 16 to 22 carbon atoms. R2 is a hydrogen atom or a methyl group.) (In formula (2), R3 is a hydrogen atom, a glyceryl group, a straight-chain or branched-chain hydroxyalkyl group having 1 to 4 carbon atoms, or a polypropylene glycol group represented by —(C3H6O)nH (here, n is an integer of 2 to 10). R4 is a hydrogen atom or a methyl group.

Abstract: The present invention provides a production method that can easily produce an O/W emulsion composition without using a special cooling apparatus and be economical. The production method of an O/W emulsion composition comprising the preparation of an emulsified part that is an O/W emulsion by emulsifying, at a temperature of 70° C. or higher, an oil phase comprising (A) a mono-branched fatty acid POE (0-60) glycerin ester, (B) a linear higher alcohol having 16 or more carbon atoms capable to form an ?-gel in water with said (A), and (C) an oil component, and a part of an aqueous phase (a first aqueous phase) comprising (D) water; and the cooling of this emulsified part by mixing with stirring the remaining main aqueous phase (a second aqueous phase) at 10 to 35° C., wherein an aqueous solvent in the emulsified part is 15 mass % or less.

Abstract: A new emulsified cosmetic composition involving ?-gel, and the viscosity of the emulsified composition does not decrease over time even when salts are not added. The composition contains (A)-(E) ingredients, where (A) ingredient is a higher aliphatic alcohol, (B) ingredient is an anionic surfactant, (C) ingredient is a cationic surfactant, (D) ingredient is water, (E) ingredient is an oil component. The blend ratio of (B) ingredient is 1-15 times of the blend ratio of (C) ingredient in terms of the mole ratio.