Shiseido Company, Limited

Shigenori Kumagai

Kazuhisa Ohno

Susumu Takada

Hiroshi Fukui

Tomiyuki Nanba

Masaru Suetsugu

Fukuji Suzuki

Masato Hatao

Masumi Koishi

Toshihiko Nakane

Minoru Fukuda

Eiichiro Yagi

Nobuhisa Tsujita

Hiroyuki Yokoyama

Yutaka Okunuki

Fujihiro Kanda

Tadao Ohta

Toshihide Ebisawa

Yoshio Yahata

Katsuki Ogawa

Toshio Yoneyama

Osamu Moro

Toshihiro Tanaka

Yasuo Matsuoka

Harumi Suzuki

Harumi Odagiri

The present invention is a photochromic color rendering regulatory composition and cosmetics characterized in comprising of an inorgamic compound having photochromic property. Photochromic inorganic compounds colors the composition and cosmetics suitably according to the change in light intensity. Therefore, composition and cosmetics of the present invention can regulate appropriate the tendency in which the color of objects looks whiter when the light intensity is strong and it looks blacker when it is weak, and can always provide constant color rendering.

Photochromic color rendering regulatory composition and cosmetics

Provisions are made so that an SPF value having high correlation with an in vivo SPF value can be calculated in vitro using a common calculation equation regardless of the material type used. Transmitted UV intensities I(.lambda.) are corrected by respective erythemal effectiveness coefficients EE(.lambda.) to calculate an erythema-inducing UV intensity EUI, and the elements of I(.lambda.) from .lambda.=320 to 400 nm are summed to calculate a transmitted UV-A intensity; then, from the ratio UV-A/EUI, a theoretical value .alpha..sub.TH is calculated for the base .alpha. of a photoaugmentative effectiveness .alpha..sup.UVA, and using EUI.times..alpha..sub.TH.sup.UVA, an ultimate theoretical value EUI.sub.UL of EUI is calculated. When EUI.sub.UL is larger than 75, the SPF value is calculated from 1350/EUI.sub.UL ; otherwise, the SPF value is calculated using an empirical equation.

Method and apparatus for measuring ultraviolet protection effectiveness

A water-in-oil type emulsified solid composition containing (a) an oil component such as a silicone oil, (b) a solid wax and/or an oil-gelling agent, (c) water, and (d) (i) a polyoxyalkylene modified organopolysiloxane or (ii) a lipophilic surfactant and a hydrophobically treated powder, wherein the water content is 5% by weight or more, based upon the total amount of the composition.

Water-in-oil emulsion solid cosmetic composition

A magnesium aluminometasilicate coated composite powder which comprises magnesium aluminometasilicate, or magnesium aluminometasilicate and at least one other powder coated on a surface of a core powder and which is usable in, for example, a skin treatment agent, decodorant, and oral composition.

Magnesium aluminometasilicate coated composite powder and use thereof

A photochromic flesh-colored pigment comprising not less than 90 wt % of anatase type titanium oxide having photochromism and a process for producing a photochromic flesh-colored pigment comprising the steps of adding iron hydroxide (FeOOH) to a composition containing untreated anatase type titanium oxide as the main ingredient, and calcining the mixture at 750.degree. to 850.degree. C. It is possible to exhibit a flesh color with a single color with a single pigment and it is also possible to change the color depending upon the intensity of light.

Photochromic flesh-colored pigment and process for producing the same

A composite powder wherein an organic or inorganic core powder is substantially completely covered with one or more types of organic, inorganic, or metallic powders having an average particle size one-fifth or less of the average particle size of the above core powder by means of mixing and compression. The composite powder may be manufactured by mixing and compressing the above core powder and coating powder using a ball mill or other mixer charged with a ball shaped mixing medium of an average diameter of 5 mm or less. This composite powder may be used in, for example, skin treatment agent, makeup type cosmetics, sunburn preventing cosmetics, deodorants.

Composite powder and production process

Growing community of inventors

Yokohama, Japan

Shigenori Kumagai