The disadvantage is that if it is over concentrated on your skin, it can get burned.
ultra violet rays
ultra violet rays Actually, it's spelled ultraviolet rays.
Ultra Violet Rays
ultra violet rays
"ozone"
no
Ultra violet radiation or UV rays are harmful. Ozone protects us from it.
UV rays? or Ultra Violet rays
Ozone layer.
No
Ultra Violet :D
chlorophyll