AVENTURINE Collagen Booster Mask, a hydrotensyl complex (hydrolyzed collagen and elastin) works to form a protective barrier that helps skin retain moisture while smoothing and softening. Enhanced with kaolin clay, used for centuries by Romans to purify and balance dry and oily skin. Kaolin clay helps mineralize dry areas while removing excess sebum from oily areas to give skin smooth skin that retains moisture. Expiration: 12/2021 New to Poshmark? Use sign-up code LALASERA for $10 off your purchase!