Abstract: A starting (raw) material, for cosmetics, comprising a core corona type microgel dispersion obtained by radical polymerization of a specific polyethylene oxide macromonomer, a specific hydrophobic monomer, and a specific cross-linking monomer under specific conditions. The purpose of the present invention is to provide the raw material for cosmetics, with which the cosmetic having a high stability provides a good feeling in use and does not cause skin irritation, can be easily produced.

Abstract: To provide an oil in water type solid cosmetic composition which can be solidified into a stable solid shape, has a desired sensation of elasticity, has favorable take up properties when taken up with a finger, and imparts a superior sensation of freshness when utilized, as an oil in water type preparation. An oil in water type solid cosmetic includes: (a) 0.1 to 5% by mass of a hydrophobically modified polyether urethane; (b) 0.01 to 5% by mass of a hydrophilic plate shaped powder; (c) a hydrophobic powder; (d) an oil component; and (e) water.

Abstract: The oily cosmetic includes 4 to 22 mass % of a polyether modified silicone wax and 40 to 80 mass % of an oily component. The oily component contains 46 mass % or more of a volatile oily component. The volatile oily component is contained in an amount of 25 mass % or more with respect to the mass of the oily cosmetic.

Abstract: [Problem] To provide a cosmetic brush cleaner excellent in quick dryability and capable of removing stains such as deposited cosmetics with ease in the following manner: impregnating tissue paper, towel, or the like with the cleaner to wipe off the cosmetics, sebum, and the like deposited on a cosmetic brush; or directly spraying the cleaner on a cosmetic brush, and wiping the brush with dry tissue paper or the like. [Solution] A cosmetic brush cleaner including: (A) a lower alcohol in an amount of 30 to 99 mass %; (B) a volatile oil in an amount of 1 to 70 mass %; and (C) water in an amount of 7 mass % or less (including 0 mass %).

Abstract: A powder-containing composition contains an aqueous solvent, a cationic polymer that is present in the aqueous solvent and a powder that bears a negative charge on a surface in the aqueous solvent and has a BET specific surface area of less than 50 m2/g. A ratio of the mass in the composition of the cationic polymer to a total surface area in the composition of the powder is 1 ?g/m2 to 100,000 ?g/m2.

Abstract: The purpose of the present invention is to provide an agent for improving skin looseness or aging caused by dermal cavitation. By attracting fat stem cells into cavities in the dermis, dermal fibroblasts around the cavities can be activated and thus dermal cavitation can be ameliorated. As the results of a screening for fat stem cell attractants, it was found that rosemary extract and licorice extract are capable of attracting fat stem cells and, therefore, can improve skin looseness or aging caused by dermal cavitation.

Abstract: The purpose of the present invention is to develop a method for screening drugs having the effect of increasing skin barrier function in in vitro studies and to evaluate barrier function in the skin. Candidate drugs can be screened by using the activity and/or expression level of serine racemase as an indicator.

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: Provided are: a core-corona polymer particle excellent in emulsion stability and feeling of use, and a raw material for a cosmetic and an oil-in-water emulsion cosmetic comprising the particle. Certain embodiments of the present invention provides a core-corona polymer particle obtained by radical-polymerizing a polyethylene oxide macromonomer represented by formula (1) and one or two or more of hydrophobic monomers represented by formulas (2) and (3) under conditions (A) to (D).

Abstract: Provided are a raw material for a cosmetic and an oil-in-water emulsion cosmetic comprising a core-corona polymer particle excellent in emulsion stability and feeling of use. Certain embodiments of the present invention provides a raw material for a cosmetic, comprising a core-corona polymer particle dispersion obtained by radical-polymerizing a polyethylene oxide macromonomer represented by formula (1) and one or two or more of hydrophobic monomers represented by formulas (2) and (3) under conditions (A) to (D).

Abstract: Provided are: a core-corona polymer particle excellent in emulsion stability and feeling of use, and a raw material for a cosmetic and an oil-in-water emulsion cosmetic comprising the particle. Certain embodiments of the present invention provide a core-corona polymer particle obtained by radical-polymerizing a polyethylene oxide macromonomer represented by formula (1) and one or two or more of hydrophobic monomers represented by formulas (2) and (3) under conditions (A) to (D).

Abstract: Provided are: a core-corona polymer particle excellent in emulsion stability and feeling of use, and a raw material for a cosmetic and an oil-in-water emulsion cosmetic comprising the particle. Certain embodiments of the present invention provides a raw material for a cosmetic comprising a core-corona polymer particle obtained by radical-polymerizing a polyethylene oxide macromonomer represented by formula (1) and one or two or more of hydrophobic monomers represented by formulas (2) and (3) under conditions (A) to (D).

Abstract: Provided is an identification method for dermal sheath cup cells (DSCC) in hair follicle-derived cells, said method being characterized by comprising using the expression level of GREM2 gene as an index. Also provided is a method for evaluating a composition for hair follicle regeneration which contains hair follicle-derived cells, said method being characterized by comprising determining the ratio and/or activity of dermal sheath cup cells (DSCC) in the hair follicle-derived cells with the use of the expression level of GREM2 gene as an index.

Abstract: An elastomer improves the feel of inorganic powder on the skin. An emulsion cosmetic is characterized by containing: (A) 0.5-20 mass % of an inorganic powder having an elastomer coating layer containing (a1) and (a2); and (B) 20-80 mass % of an oil component. The elastomer is characterized by comprising: (a1) a silicone polymer having an amino group; and (a2) a carboxyl group-containing silicone polymer or a carboxyl group-containing acrylic polymer, wherein the molar ratio of the amino group to the carboxyl group, Y/X is in the range of 0.1-1.2 (Y is the molar amount of the carboxyl group contained in the component (a2), and X is the molar amount of the amino group contained in the component (a1)).

Abstract: The purpose of the present invention is to develop a method or system for measuring the skin condition easily and accurately. The method for determining the skin condition based on the thermal sensitivity in the skin was perfected by discovering that the skin condition, especially the skin barrier function, can be determined based on the thermal sensitivity in the skin.

Abstract: The purpose of the present invention is to newly provide a method with which it is possible to appropriately evaluate the protective effect of an external preparation for skin such as a sunscreen cosmetic, particularly to evaluate how a UV-ray protective effect is affected by heat. This evaluation method is characterized by including (1) a step for forming a coating film of an external preparation for skin on a substrate, (2) a step for heat-treating the coating film of the external preparation for skin, and (3) a step for measuring the UV-ray protective effect of the heat-treated coating film of the external preparation for skin. The heat treatment is preferably carried out for at least one minute at a temperature of 30-70° C.

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: The present invention provides an intermediate composition enabling to prepare easily and steadily an ?-gel-containing O/W emulsion cosmetic that has a very small viscosity change over time and is excellent in emulsion stability, without using a cooling device that has a heavy burden on cost and the environment, and a production method thereof. An ?-gel intermediate composition consisting of (A) 20 to 80 mass % of a mixture containing one or more higher alcohols having 16 or more carbon atoms and a nonionic surfactant with an HLB value of 7 to 17 in the mole ratio of 3:2 to 5:1, and (B) 20 to 80 mass % of a mixture containing one or more water-soluble solvents having the IOB value of 1.5 to 3.5 and water in the mass ratio of 4:6 to 8:2, and wherein the composition is a liquid consisting of a bicontinuous microemulsion phase or a lamellar liquid crystal-dispersed bicontinuous microemulsion phase at 50 to 80° C. and a solid at room temperature.

Abstract: The invention provides a cosmetic base having an unprecedented appearance and feeling on use, in particular a cosmetic base with a novel feeling on use that gives a fresh feeling and a unique feel as the cosmetic softly bursts and collapses, allowing water to flow out, when applied to the skin, and a skin cosmetic using the same. A cosmetic base includes (A) 0.15-0.6 mass % of sodium acrylate-grafted starch and (B) 0.25-1.35 mass % of an associative thickener having a polyoxyalkylene chain wherein the total amount of the (A) sodium acrylate-grafted starch and (B) associative thickener having a polyoxyalkylene chain compounded is 0.5-1.5 mass % and to a skin cosmetic that uses the cosmetic base.

Abstract: The present invention provides a multilayer type powder-containing cosmetic preparation which can be variously formulated and in which the powder ingredient has excellent re-dispersibility without being required to have undergone a surface treatment. The a multilayer powder-containing cosmetic preparation includes (a) to (c) components: (a) a 60-95% by mass lower alcohol; (b) a powder ingredient (excluding a (c) component); and (c) a finely particulate powder which has an average primary-particle diameter of 10-550 nm and includes silica or titanium dioxide as a core.