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|1. (WO2018221406) HOLLOW PARTICLES AND COSMETIC|
|Applicants:||JGC CATALYSTS AND CHEMICALS LTD.
|Title:||HOLLOW PARTICLES AND COSMETIC|
The hollow particles according to the present invention have a balloon structure having a cavity inside an outer shell thereof, and have protruding portions each having a size of 3-100 nm on the surface thereof. Further, the particles have a true specific gravity of 0.3-3.0 g/cm3 and a specific surface area per unit volume (m2/cm3) of not less than 0.5 but less than 60 as measured by BET. The particles have an average particle size (d1) within the range of 1-20 μm. Cosmetics containing the hollow particles have soft tactile characteristics similar to those of plastic beads.