Shiseido Company, Limited

Shiseido Research Center

Norinobu Yoshikawa

Kenichi Sakuma

Satoshi Tomomasa

Hiroyuki Yokoyama

Eriko Kawai

Takashi Matsui

Hiroshi Fukui

Kazuhiro Yamaguchi

Kazuhisa Ohno

Yukimitsu Suda

Katsuki Ogawa

Masayuki Shirao

Keiko Sakai

Takayuki Sakiguchi

Shigeyuki Ogawa

Yuki Nomura

Makio Akimoto

The present invention provides water-in-oil type emulsion sunscreen cosmetics that achieve an excellent UV blocking effect, and have excellent effects in the prevention and inhibition of discoloration (discoloration to red). The water-in-oil emulsion sunscreen cosmetic according to the present invention is characterized by comprising: (a) octocrylene; (b) hydrophobized zinc oxide; (c) cationic surfactant; and (d) silica.

Water-in-oil type emulsion sunscreen cosmetics

A complex powder comprising an adsorption site and operation site, In the complex powder described above, it is preferable that &#x3b6;-potential of the adsorption site at the pH employed is negative value, And it is preferable that said adsorption site has &#x3b6;-potential at pH7.5 of &#x2212;10 mV or below. In the complex powder described above, it is preferable that said specific enzyme is a plasminogen activator, and the operation site inhibits said plasminogen activator. The complex powder described above can be used as an external composition for improving a rough skin and an external composition for a sensitive skin.

Composite powders and skin preparations for external use containing the same

A first subject of the present invention is a composite powder having antibacterial and antifungal effect, in which a base powder, zinc oxide and/or zinc basic carbonate, and alkali metal salt are combined. In the composite powder, it is preferable that the base powder is an adsorbing site for adsorbing a specified enzyme, and a site in which zinc oxide and/or zinc basic carbonate and alkali metal salt are combined is an acting site having enzyme inhibiting or activating property. In the composite powder, it is preferable that the zeta-potential of an adsorbing site at pH to be used is a negative value, and the zeta-potential of an adsorbing site at pH 7.5 is &#x2212;10 mV or lower. A second subject of the present invention is a cosmetic composition comprising the aforementioned composite powder. The composite powder can be also used as a skin roughening improving agent, a sensitive skin caring agent or a pimpled skin caring agent.

Composite powder and cosmetic containing the same

The invention provides a color-developing composition without using a pigment or dye and capable of being colored sustainably and stably after mixing two liquid phases which are colorless before mixing. The composition consists of two discrete liquid phases, wherein the refractive index of each liquid phase is identical to each other at a point within the wavelength range from 400 nm to 800 nm, wherein a continuous layer and a dispersion layer are formed by mixing and dispersing said two phases whereby developing a color. Alternatively, the composition is a powder dispersion consisting of a liquid phase and a silica powder-containing solid phase, wherein said liquid phase has a refractive index nand said silica has a refractive index n, which satisfy Equation (1):|1&#x2212;2|&#x3c;0.05&#x2003;&#x2003;(1)whereby developing a color on the basis of the difference in the refractive index at the interface between the liquid phase and the solid phase. The present invention also provides a cosmetic preparation, a fragrance product and a display article using the composition.

Color-developing composition and cosmetic, fragrance products and miscellaneous goods for display with the use of the same

Growing community of inventors

Yokohama, Japan

Norinobu Yoshikawa