What UV Light Does to Skin to Cause Sunburn, Wrinkles and Cancer
UV light causes everything from sunburn to skin cancer and the wrinkles and sagging that come with age. But what exactly does it do in our bodies to wreak all that havoc?
Ultraviolet (UV) light is just a higher energy version of the light we see (visible light). And it’s that higher energy that makes the UV in sunlight damaging to our cells and tissues.
To do any damage, UV light has to be absorbed. This happens at the molecular level. And it happens one electron at a time.