It protects the skin from harmful rays by absorbing ultraviolet (UV) radiation before it reaches the inner layers of the skin, or by reflecting it away from the epidermis, thus preventing damage and maintaining healthy skin. It also helps prevent premature skin aging and reduces the appearance of signs of aging such as wrinkles, fine lines, and pigmentation. Studies have shown that using sunscreen reduces the chance of developing signs of aging by up to 24%, especially for people under 55.