Cosmetics, surface-hydrophobized silica-coated metal oxide particles, silica-coated metal oxide sol, and production methods thereof

摘要

The present invention relates to (1) a cosmetic containing a silica coated metal oxide particle having a surface treated with a hydrophobic agent, (2) a ratio of a specific infrared absorption spectrum intensity and a particle of a metal oxide particle having a refractive index and a treated particle with a hydrophobic agent This is an invention of the manufacturing method. The present invention also includes a silica coated metal oxide sol for obtaining the particles and a method of producing the same. According to the present invention, it is possible to obtain an excellent ultraviolet ray blocking agent excellent in transparency.