Prep + Prime Face Protect SPF 50 protects the skin from UVA/UVB rays; it helps fill lines and makes imperfections appear less visible. Silica Dimenthyl Silylate helps the formula absorb easily into skin, and Stearyl Glycyrrhetinate balances the combination of ingredients so it is gentle to use and suitable for all skin types. Skin retains its moisture with Glycerin and is protected against future environmental damage with Tocopherol.