Obagi's Physical Defense Tinted Broad Spectrum SPF 50 offers protection from (HEV) visible light (VIS) and infrared rays (IR) and damaging 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. Key Ingredients:Titanium Dioxide & Zinc Oxide: provide UVA and UVB protectionAntioxidants: defend against free radical and oxidative stressKey Benefits:Defends skin from high energy visible light (HEV) visible light (VIS) and infrared rays (IR) and free-radical damageLightweight, sheer and residue-free finishFormulated without chemical sunscreen agents, parabens, synthetic fragrances and dyesHypoallergenic, non-comedogenic, dermatologist-tested, non-sensitizing, non-irritating, and reef safe | Obagi Medical Physical Defense Broad Spectrum SPF 40, 3. 4 oz | Dermstore