Shin-Etsu Chemical Co., Ltd.

Noevir Co., Ltd.

Hiroko Kikuchi

Masanao Kamei

Tetsuya Inukai

Hiroyuki Moriya

Chihiro Hayakawa

Ryuichi Inaba

Mitsugu Saito

Sayaka Aramaki

Hiroko Yoshida

Tomoki Okawa

Masaki Arashima

The present invention addresses the problem of evaluating the hydrophobicity of a powder. According to the present invention, a powder is charged into a mixed solvent composed of a lipophilic solvent and a hydrophilic solvent, the voltage rate R of the mixed solvent is measured at predetermined time intervals while adding a lipophilic solvent to the mixed solvent charged with the powder, a parameter x correlating with the concentration of powder is defined for an arbitrary voltage rate R, a continuous function HP(x) of the ratio of a lipophilic solvent corresponding to x is defined, and HP(x) for required x is set as a representative value of a lipophilic solvent ratio distribution and used as an index of hydrophobicity.

Method for analyzing degree of hydrophobicity of powder, highly hydrophobized coloring pigment, and cosmetic containing said coloring pigment

The present invention provides a cell activation agent, a collagen production accelerator, a whitening agent, an antioxidant, an anti-inflammatory agent, an aromatase activity accelerator, a protease activity accelerator, a skin external preparation, and food, which all contain an extract of

Cell activator, collagen production promoter, skin whitening agent, antioxidant agent, antiinflammatory agent, aromatase activity promoter, protease activity promoter, external preparation for skin, and food

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Tokyo, Japan

Hiroko Kikuchi