In Kristals Cosmetics PEARL Neck & Chest Extra Firming Mask, pure pearl powder works in concert with kaolin clay, which was used for centuries by Romans, Greeks and Egyptians to purify different skin types while being particularly effective at balancing dry and oily skin. Kaolin clay helps mineralize dry areas while removing excess sebum from oily areas to give you smooth skin that retains moisture. This rich formula is blended with allantoin to combat allergens that can irritate the skin.