Bentonite clay is available in various forms depending on your intended use, ranging from deep-cleansing facial masks to food-grade powders for DIY projects. You can find popular brands like Aztec Secret Indian Healing Clay Go to product viewer dialog for this item. at major retailers like Target and Walmart , or specialized versions such as Belle Chemical Food Grade Powder Go to product viewer dialog for this item. from online stores. Where to Buy Bentonite Clay Food Grade Sodium Bentonite Clay - Powder - 1 Pound -