Sunscreen helps prevent the sun’s ultraviolet (UV) radiation from reaching the skin.
Ultraviolet (UV) rays are part of the light that reaches the earth from the sun. Ultraviolet A (UVA) rays cause lasting skin damage, skin aging, and skin cancer. Ultraviolet B (UVB) rays cause sunburns, skin damage, and skin cancer.
SPF (Sun Protection Factor) is a measure of a sunscreen’s ability to prevent UVB rays from damaging the skin. Most sunscreens with an SPF of 15 or higher do an excellent job of protecting against UVB rays.
Broad-spectrum sunscreens protect the skin from both UVA and UVB rays and are recommended for all users.