Shiseido Company, Limited

Tomo Osawa

Tomoko Ikeda

Noriko Tomita

Tetsuya Kanemaru

Isamu Kaneda

Shun Kubota

Ayano Matsuo

Takuya Hiruma

Shuji Nishihama

Shoko Ogawa

Atsushi Sogabe

Yuji Sonoyama

Mayo Shinke

Kaori Sasada

Shin-ichi Yusa

Mao Hitomi

Provided is an elastomer that improves the skin feel of an inorganic powder. The elastomer according to the present invention is an elastomer comprising: (A) an amino group-containing silicone polymer; and (B) a carboxyl group-containing silicone polymer or a carboxyl group-containing acrylamide polymer, wherein a molar ratio Y/X between amino groups and carboxyl groups is within a range of 0.1 to 1.2, wherein Y denotes the molar amount of carboxyl groups contained in the component (B), and X denotes the molar amount of amino groups contained in the component (A).

Elastomer

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)).

Emulsion cosmetic

The present invention provides a lip cosmetic that has excellent secondary adhesion resistance effect immediately after the application and is excellent in gloss durability and stability. The lip cosmetic of the present invention is characterized by comprising the following components (a) to (d):

Lip cosmetics

To provide surface-treating agents that can provide excellent hydrophobicity to powder and can improve its rinsability, to provide surface-treated powders that are treated with the surface-treating agent, and to provide cosmetics that comprise the surface-treated powder. A surface-treating agent consisting of a polymer which comprises a monomer (A) represented by the general formula (1) described below as a constituent monomer. (wherein Rrepresents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, Rrepresents an alkylene group having 4 to 22 carbon atoms, Xrepresents an &#x2014;NH&#x2014; group or an oxygen atom, and Mrepresents a hydrogen atom or a monovalent inorganic or organic cation.)

Surface-treating agents, surface-treated powders, and cosmetics comprising the same

The present invention provides a lip cosmetic that has excellent secondary adhesion resistance effect, good gloss, and excellent stability. The lip cosmetic of the present invention is characterized by comprising the following components (a) to (c):

The present invention provides a lip cosmetic that has good gloss and good stability, while maintaining post-application secondary adhesion resistance. The lip cosmetic of the present invention is characterized by comprising the following components (a) to (d):

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Yokohama, Japan

Tomo Osawa