This sunscreen contains a medium concentration of alpha hydroxy acids and helps nourish and hydrate the skin, leaving it feeling silky but not sticky. Contains organic and inorganic reflective sunscreens (titanium dioxide) that provide a sun protection factor 15. Alpha Day Lotion SPF 15 has been specifically formulated for skins with irregular tones, as well as for mature, sun damaged, oily and acne problems. Instructions for use: Apply Alpha Day Lotion SPF 15 to your face, neck and décolleté over your favorite product from Environ and to other areas of skin exposed to the sun. If too thick a layer is applied, the skin may appear matte. It is advisable to apply the product again every two hours if you spend long periods of time in the sun.