Repeated exposure to the sun has been shown to enhance wrinkles and other aging effects of the skin. In addition, long-term exposure to strong sunrays also increase the risk of getting skin cancer. Even using sunscreen cannot protect your skin from the irreversible effects of long-term sun exposure. If you wish to avoid any of the negative effects the sun can have on your skin, the best defense is protection. Large hats and clothing are effective means of protection as well as a sunscreen with an S.P.F. numbered 15 or greater. Consult a healthcare professional for more information.