Natural sunscreensUse active mineral ingredients, such as Zinc Oxide and Titanium Dioxide. They reflect the sun’s rays like a mirror to protect exposed skin. Mineral active ingredients do not break down as readily in the sun as chemical ingredients.Chemical sunscreensUse a combination of two to six of these active ingredients: oxybenzone, avobenzone, octisalate, octocrylene, homosalate, and octinoxate. They absorb rays in a chemical reaction that dissipates the heat back off the skin.