Bentonite, also referred to as Montmorillonite, is one of the most effective and powerful healing clays used to treat both internal and external maladies. Bentonite can be used externally as a clay poultice, mud pack or in the bath and, in skin care recipes. Internally it can be added to water or glazed upon food to help those with sensitive palates. A good quality Bentonite should be a grey/cream color and anything bordering “pure white” is suspect. It has a very fine, velveteen feel and is odorless and non-staining.