Kobe University and Ushio Find 222nm UVC Radiation Safe for Human Skin

A joint research conducted by Japan’s Kobe University and Ushio, the Japan-based LED component maker, claims proof that direct and repetitive illumination from 222nm UVC radiation does not cause skin cancer. This suggests that 222nm UVC is also safe for human eyes and skin. UVC wavelength of 200-280nm is germicidal and has been widely used for disinfection. But UVC radiation is also harmful to human skin with its penetrative power.