Susan Obagi, M.D. brings you this strong UVA and UVB protection with antioxidants to defend against HEV, VIS, IR, and free radicals known to speed up the aging process. Lightweight and mineral-based, this sheer sunscreen is powered by titanium dioxide and zinc oxide to help protect against UVA and UVB rays, while antioxidants defend against free radical damage. Lightly tinted to easily blend into multiple skin tones and complexions.SUZANOBAGIMD physical defense sunscreens are uniquely formulated with mineral sunscreen agents fortified with antioxidants to offset free-radicals and oxidative stress in skin.Active Ingredients:Zinc Oxide 14.4%, Titanium Dioxide 5.8%