Neutrogena Healthy Skin Primer helps even and brightens skin. This silky, lightweight makeup products contains optical modifiers that help minimize the physical appearance of blemishes the entire day. It is formulated with Natural Soy, a verified tone-correcting ingredient, that helps improve the physical appearance of skin in the long run. This primer helps prolong makeup wear while helping skin look more even for up to 8 hours. This Broad Spectrum SPF 15 formula with an exclusive Antioxidant Blend evens the look of skin all day with or without makeup while helping to protect your skin from the sun's damaging rays. This tone-correcting primer helps makeup apply more smoothly and last longer and can certainly be worn alone or under foundation. How to Use Apply all over face after moisturizer and before foundation.