What does the blacklight do?
Black lights emit long wave ultraviolet (UV) light that allows materials and substances invisible to the human eye under normal lighting to fluoresce and produce visible color and light.
Are blacklight bad for you?
UVA is thought to cause premature ageing and has recently been linked to some skin cancers, however UVB is the main cause of skin cancer. Exposure to UVA from black lights is well below the recognised safe limits and is not hazardous to people using them, working in their vicinity or who have them in their home.