Check the listing for details. Bentonite Clay Powder 100% Pure Natural Aztec Indian Healing Cosmetic Grade Bulk. Condition: New. Listed at 8.95 USD. Bentonite Clay 100% PURE & NATURALAztec Healing ClayFREE SHIPPING100% Pure Bentonite Clay.Deep Pore Cleansing Face / Hair Mask.Chemical Free / No Preservatives.Fine powder, odorless and tasteless. Bentonite Clay (cosmetic Grade) Bentonite clay [Sodium Bentonite] (a combination of montmorillonite and volcanic ash) is a highly absorbent clay best suited for oil skin. It is a fine powder, odorless and tasteless, insoluble in water, swelling to about eight times its weight when water is added. Uses: Suspending and colloidal agent in the manufacture of soap, also used in cosmetics and directly on the body as a mask. Bentonite powder is added to soap at trace to help oily skin or as an additive in shaving soap (1T per #of soap). In masks it's not normally used as the predominant clay due to it's ability to absorb large quantities of water (thus making the mask product take a very long time to dry). It is, however, used in smaller quantities to make mask products more elastic.