Absorbent clays have long been used in the pharmaceutical and cosmetics industries. Bentonite is widely used as a binder in pharmaceutical tablet manufacturing and in diarrhea medications. It is also used as an antidote to heavy metal poisoning. Clays are used as thickeners in a wide variety of consumer products and cosmetics including mud packs, baby and face powders, facial creams, lipsticks, shampoos and calamine lotion. Clays are especially popular for face masks. A mud pack made of clay is applied to the face. As the clay dries it absorbs oil and impurities from the skin leaving the pores clean and healthy.