UV radiation can be classified into 3 types based on wavelength: UVA, UVB and UVC.
” UVC has been utilized for years, it’s not new,” Indermeet Kohli, a physicist who studies photomedicine in dermatology at Henry Ford Healthcare Facility in Detroit, informed Live Science. She warned that UVC disinfection innovations need to mostly be left to medical facilities and assessed for safety and efficacy by groups with competence in photomedicine