This product is unequaled for protection against the damaging rays of the sun. It is the UVB rays that give us that painful sunburn in the summer. The UVA rays, which are of longer wavelength, zip right through the skin into the deeper layers, where they damage the elastin and collagen that give our skin strength and flexibility. This damage is what produces the development of fine-line wrinkles. Pigment also begins to accumulate in little piles under the epidermis which we see as sun freckles and age spots. This moisturizer with sunscreen stops the ultraviolet rays from damaging the elastin and collagen and also inhibits the formation of sun freckles and age spots. Whenever the Renewal Cream or the Blemish Formula are used, this moisturizer with sunscreen should always be applied immediately after for best results.