Question

Which is true about UVA and UVB rays?

A. Both rays can be blocked 100% by sunscreen
B. UVA protects the surface, UVB protects beneath the surface
C UVB rays cause burning, UVA rays cause premature aging
D. UVA rays cause burning, UVB rays cause premature aging

Answer 1

Answer: C. UVA rays cause premature aging and UVB rays cause burning

Explanation: Ultraviolet radiation causes DNA changes in the skin, leading to premature aging and skin cancer. There are three kinds of UV light: UVA light. This form of solar radiation damages skin at all levels—from the surface layer (epidermis) down deep into the dermis.