UVA-UVB Sunscreens
UVA-UVB Sunscreens
UV means ultraviolet, and refers to the radioactive rays emitted by the sun. Two types of damaging UV rays reach the earth: UVA and UVB. UVA rays mainly cause aging, while UVB rays mainly cause burning. However, SPF (Sun Protection Factor) measures only UVB—not UVA protection. And most experts agree that up to 80% of […]