Using Olay Complete All-Day UV Moisturizer gives your skin two essential things: hydration and protection from UVA and UVB rays, both of which contribute to a healthy, smooth and youthful appearance. Since your face is the part of you that is most likely to be exposed to sunlight, it is in need of extra protection. Olay Complete All-Day UV Moisturizer contains SPF 15 and moisturizer, which together hydrate and refresh your skin as well as defend it from the sun. While some sunscreen might block UVA rays, Olay UV moisturizer blocks these and UVB rays as well, offering complete protection. Olay Complete All-Day UV Moisturizer works all day, so you need only apply the SPF 15 moisturizer once daily to enjoy its benefits. Olay Complete All-Day UV Moisturizer also contains skin-nourishing vitamins such as vitamins B3, C and E to help keep your skin extra-healthy as well as moist. The light, oil-free formula is non-greasy and goes on smoothly.