This tinted sunscreen has an advanced formulation that provides protection against both UVA and UVB radiation. Unlike most sunscreens, this sun protection product also defends against infrared rays and helps to buffer the skin from heat-derived oxidative stress. The active sunscreen ingredients (titanium dioxide, zinc oxide, homosalate and octinoxat) provide broad spectrum protection. Also, the product is designed to match your natural undertone and enhance your natural complexion. Use the Cool Shade if you have bluish, red or pink undertones, fair skin that sunburns more easily, or forearm veins that appear more blue in color. Use the Warm Shade if you have yellowish, golden or olive undertones, a darker complexion that tans more easily, or forearm veins that appear more green in color.