Abstract: Provided is a polylactic-acid-containing aqueous dispersion capable of forming a transparent film at room temperature. A polylactic-acid-containing aqueous dispersion contains (1) polylactic acid; (2) at least one plasticizer selected from the group consisting of dimethyl adipate, diethyl adipate, dipropyl adipate, diisopropyl adipate, dibutyl adipate, diallyl adipate, bis(2-butoxyethyl) adipate, bis(2-methoxyethyl) adipate, dimethyl succinate, dimethyl glutarate, diethyl sebacate, diisopropyl sebacate, and mixtures thereof; (3) at least one dispersion stabilizer selected from the group consisting of cationic polymers, anionic polymers, polyvinyl alcohols, and non-ionic surfactants; and (4) water.

Abstract: The present invention provides, without use of a surfactant, an oil-in-water emulsion composition and cosmetics having fresh and smooth feeling without powderiness in use, and having excellent emulsion stability by preparing a Pickering emulsion using a spherical polylactic acid powder. An oil-in-water emulsion composition is obtained as a composition containing (a) a spherical polylactic acid powder having an average particle size of from 0.5 to 1.5 ?m, wherein 90% by volume or more of the whole particles of the powder have a particle size of 3 ?m or less, (b) an oil phase component, and (c) an aqueous phase component, and containing substantially no surfactant. Desired cosmetics are obtained by using the oil-in-water emulsion composition.

Abstract: Provided is a polylactic-acid-containing aqueous dispersion capable of forming a transparent film at room temperature. A polylactic-acid-containing aqueous dispersion contains (1) polylactic acid; (2) at least one plasticizer selected from the group consisting of dimethyl adipate, diethyl adipate, dipropyl adipate, diisopropyl adipate, dibutyl adipate, diallyl adipate, bis(2-butoxyethyl) adipate, bis(2-methoxyethyl) adipate, dimethyl succinate, dimethyl glutarate, diethyl sebacate, diisopropyl sebacate, and mixtures thereof; (3) at least one dispersion stabilizer selected from the group consisting of cationic polymers, anionic polymers, polyvinyl alcohols, and non-ionic surfactants; and (4) water.

Abstract: The present invention provides, without use of a surfactant, an oil-in-water emulsion composition and cosmetics having fresh and smooth feeling without powderiness in use, and having excellent emulsion stability by preparing a Pickering emulsion using a spherical polylactic acid powder. An oil-in-water emulsion composition is obtained as a composition containing (a) a spherical polylactic acid powder having an average particle size of from 0.5 to 1.5 ?m, wherein 90% by volume or more of the whole particles of the powder have a particle size of 3 ?m or less, (b) an oil phase component, and (c) an aqueous phase component, and containing substantially no surfactant. Desired cosmetics are obtained by using the oil-in-water emulsion composition.

Abstract: To provide cosmetic pigments that are human-body friendly with good skin adhesion and that provide good feeling, their production method, and cosmetics containing such cosmetic pigments which provide fresh and enriched feeling accordingly. Pigment surfaces are coated with mannosylerythritol lipid, which is glucolipids, consisting of mannose, sugar alcohol and a fatty acid as shown in the general expression (1) below: (Note: In the general expression, R1 and R2 denote aliphatic acyl group with carbon numbers 6 through 20, which can be either same or different. R3 and R4 denote hydrogen or acetyl group, which can be either same or different. n denotes an integer in the range of 2 to 4.

Abstract: To provide cosmetic pigments that are human-body friendly with good skin adhesion and that provide good feeling, their production method, and cosmetics containing such cosmetic pigments which provide fresh and enriched feeling accordingly. Pigment surfaces are coated with mannosylerythritol lipid, which is glucolipids, consisting of mannose, sugar alcohol and a fatty acid as shown in the general expression (1) below: (Note: In the general expression, R1 and R2 denote aliphatic acyl group with carbon numbers 6 through 20, which can be either same or different. R3 and R4 denote hydrogen or acetyl group, which can be either same or different. n denotes an integer in the range of 2 to 4.

Abstract: A coloring pearlescent flake pigment capable of providing pearl-like luster caused by interference color and a vivid color caused by a tar color is provided as a new material which contributes to the diversification of cosmetics and paints thanks to its powdery smoothness and the visual effect as well as covering protection effect in an application layer. The coloring pearlescent flake pigment having a double coating layer which is formed on inorganic flake-like particles and which is composed of a high-refraction-index metal oxide (e.g.

Abstract: A zinc oxide powder having a suppressed photocatalytic activity and prepared by coating a zinc oxide powder with at least one silicone compound in a nongaseous state and firing the coated zinc oxide powder in an oxidizing atmosphere at a temperature of 600 to 950.degree. C. A cosmetic preparation containing this zinc oxide powder is excellent in feel, sebum resistance, and protection against ultraviolet light.