Bentonite clay is a volcanic ash commonly used for facial masks. We add it to our deodorants because of its amazing power to detoxify the body. When the clay comes into contact with moisture (think sweat), it changes it's electrical charge. When this happens it attracts metals and toxins pulling them out of the body. You get healthier each time you put it on!
The clay is also a great moisture absorbent, helping you stay dry all day!