In this video we see how ultraviolet cameras can reveal sun damaged skin that the naked eye cannot see. The purpose behind the video was too shock people and persuade them into wearing sunscreen. You can tell by the way people react to their ultraviolet image that it's a shock to them.
Dermatologists often use ultraviolet (UV) photography as a way of showing patients how the sun has damaged the skin. If you are going out in the sun then make sure to cover up.