What is a common effect of sun exposure on skin?

Sun exposure commonly leads to wrinkling of the skin. This is primarily due to ultraviolet (UV) radiation from the sun, which damages the skin's collagen and elastin fibers—the proteins responsible for skin structure and elasticity. Over time, as these proteins degrade, the skin loses its firmness and elasticity, resulting in the formation of fine lines and wrinkles.

Additionally, sun exposure contributes to other visible signs of aging, such as changes in skin texture and the development of age spots, but wrinkling is a direct consequence of the breakdown of structural proteins in response to UV light. Understanding this relationship emphasizes the importance of sun protection and skincare to maintain healthy skin and prevent premature aging.