Some Basic Facts.
Sun damage can lead to premature aging, such as rough, saggy, wrinkled and discolored skin.
Even normal, everyday sun exposure can cause lines and wrinkles. It takes about an ounce of sunscreen to protect exposed skin from the sun. How the Damage Occurs. The depletion of collagen makes the skin thinner and less elastic, which promotes sagging and wrinkles. Damages skin cells that, in turn, increase melanin production.