Instead of using chemical sunscreen agents, which can be less effective and potentially irritating, Sunrider uses zinc oxide and titanium dioxide, minerals derived from the earth. When applied topically in a sunscreen formula, they block the sun’s UVA and UVB radiation from being absorbed into your skin, which means they are considered broad-spectrum sunscreens. Zinc oxide and titanium dioxide are the only mineral compounds approved by the FDA for use as active sunscreen ingredients.