Shiseido Company, Limited

Masatoshi Ochiai

Tomoyuki Kawasoe

Kazuyuki Miyazawa

Reiji Miyahara

Tadashi Nakamura

Toshio Yanaki

Yasunari Nakama

Haruhiko Inoue

Isamu Kaneda

Koichi Kinoshita

Katsunori Yoshida

Katsuo Hashimoto

Taizo Fujiyama

Takashi Teshigawara

Tomoko Watanabe

An object of the present invention is to establish means for reliably incorporating a poorly soluble UV-absorbing agent into a hair cosmetic composition, to thereby provide a hair cosmetic composition which has excellent effect of preventing UV-hair damage and which exhibits favorable sensation in use thereof. Specifically, the object can be attained through provision of a hair cosmetic composition including the following ingredients (1) and (2): wherein R represents a phytosterol residue or a phytostanol residue; m is a number from 0 to 100; and n is a number from 5 to 100, and (2) a UV-absorbing agent having a triazine group.

Hair cosmetic

The present invention provides a microgel having a mean particle size of 0.1-1,000 &#x3bc;m, the microgel being produced from a gel which is formed by use of a hydrophilic compound capable of forming a gel. An external composition containing the microgel provides an excellent sensation during use; i.e., the composition provides neither sticky sensation during use nor frictional sensation. Furthermore, even when a large amount of a pharmaceutical ingredient, such as a whitening ingredient, or a salt is incorporated into the composition, the viscosity of the composition is not lowered, and the composition exhibits excellent viscosity increasing property. In addition, the composition exhibits long-term stability, without inviting separation of water.

Microgel and external compositions containing the same

A hair dye composition comprising a component (A), which is a specified long-chain acyl sulfonic acid salt anionic surfactant, in an amount of 0.1 to 10.0 wt. %; a component (B), which is an aliphatic alcohol, in an amount of 0.25 to 25.0 wt. %; and a component (C), which is an acid dye and/or a natural dyestuff. The hair dye composition is stable even in a strongly acidic region (pH 1.5 to 4.5) where it exerts a dyeing effect. It has an appropriate viscosity and provides excellent sensation upon use. Furthermore, the composition can be easily rinsed off after use thereof.

Hairdye preparation

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Yokohama, Japan

Masatoshi Ochiai