Bentonite Powder consists primarily of montmorillonite, which can be either Na-montmorillonite or Ca-montmorillonite, and is an absorbent swelling clay. Compared to Ca-montmorillonite, Na-montmorillonite can swell much more. It acts on the skin like a sponge and like sebum, it absorbs dirt and oil. We offer this Bentonite Powder at an affordable rate in the market.