Silicon oxide powder and its production method, cosmetic using it, micelle retention powder, fragrance retention powder

摘要

TECHNICAL FIELD The present invention relates to a silicon oxide powder and a method for producing the same, a cosmetic using the same, a micelle retentive powder, a fragrant retentive powder,;0 SiO₂/ Y₂A dissolution step of dissolving silicate (Y: alkali metal atom) of O 2 at a concentration of 0.1 to 5.0 M in the presence of a cationic surfactant at a pH of 11 or more, and a step of forming a rod-shaped micelle with the cationic surfactant at a pH of 10.5 or less A condensation step of precipitating silicic acid on the bar-shaped micelle, and a removing step of removing the cationic surfactant from the micelle-shaped precipitate formed by the precipitation of the silicate. And is useful as a retained powder.