Sakai Chemical Industry Co., Ltd.

Hisao Koizumi

Kenji Mori

Hironobu Ogata

Nanae Ogata

Satoshi Komori

Momoko Ishikawa

Yasuyuki Murakami

Satsuki Motoishi

An amorphous silica powder comprising boron atoms. The amorphous silica powder comprising boron atoms has an average particle size from 10 to 100 nm, as determined from 40 particles selected at random in a transmission electron micrograph. The amorphous silica powder comprising boron atoms has a decrement in a boron content of 10 mass % or less, when fired under the following conditions: 5 to 10 g of a dried product of the boron-containing amorphous silica powder is filled into an alumina crucible, heated in the atmosphere at 200° C./hour to 1000° C. to 1100° C., maintained as it is for 5 hours, and cooled to room temperature.

Boron-containing amorphous silica powder and method of producing same

The present invention provides a cosmetic product capable of making the skin look youthful and producing a natural three-dimensional appearance. The present invention relates to a cosmetic product including two or more phosphors each containing an inorganic compound, wherein the cosmetic product, upon excitation by excitation light having a wavelength of 365 nm, emits an emission spectrum having a fluorescence emission peak in each of the range of 400 to 530 nm and the range of 620 to 720 nm and having an I/Iof 1 to 30, where Iis a maximum emission intensity in the range of 530 to 620 nm and Iis a maximum peak intensity in the range of 620 to 720 nm.

Cosmetic

Growing community of inventors

Osaka, Japan

Hisao Koizumi