Broad spectrum sunscreens protect skin from both UVA and UVB rays. UVB rays are responsible for sunburns. UVA rays can penetrate deeper into the skin, causing premature aging. Both UVB and UVA rays can cause skin cancer.
A sunscreen’s SPF number indicates its amount of protection from UVB rays. By choosing a broad spectrum sunscreen, you’ll know you are protecting your skin from the risk of early skin aging and skin cancer.