Chemically Mica is potassium aluminum silicate dihydrate. It is mined as the ore muscovite and occurs in multi-layered bright translucent sheets. Cosmetic Mica is refined and ground to particle sizes from 150µm or less before use. Products using Mica: Fizzing Bath Bombs , Northern Lights Soap Bar , Kachemak Bay Soap Bar , Lavender Rose Soap Bar , Purple Rain Bar , New Moon Soap Bar , Sam Elliot Soap Bar , Whipped Cream Exfoliating Salt Scrub |