Studies indicate that nearly 90 percent of skin aging is caused by sun exposure. Brown pigmentation spots, wrinkling, sagging, keratoses, skin cancers and uneven skin tone are all signs of sun damage. Skin cancer remains the most predominant form of cancer today. This is one of the lightest sunblocks available with SPF 30. Your skin will not feel oily and greasy with this sunblock. This product should be used everyday, everywhere skin is exposed to the sun.