Sunshine contains three different bans of ultraviolet radiation: UVA
1.___________
Sunshine contains three different bans of ultraviolet radiation: UVA, UVB and UVC. Although UVC is the most dangerous, because it is a shorter-wavelength radiation than UVA and UVB, it is screened out by the Earth’s ozone layer. UVA used to be thought less dangerous than UVB, but it is now known that both bands can cause skin cancer. It is UVB which causes sunburn. However, both UVA and UVB can age the skin prematurely.