Talc Wikipedia
Talc is a clay mineral, composed of hydrated magnesium silicate with the stone formula Mg 3 Si 4 O 10 (OH) 2.Talc in powdered form, often combined with stone starch, is used as baby powder.This mineral is used as a thickening agent and lubricant; is an ingredient in ceramics, paint, and roofing material; and is a main ingredient in many cosmetics.