A lamp test can miss what happens during a real manicure. One of the most common misconceptions about UV nail lamps is that a very low photobiological hazard rating means the lamp emits little or no UV. It does not. This misunderstanding stems from how the international standard IEC 62471 and the ANSI/IES RP-27 Series evaluates photobiological hazard. These standards are often cited to demonstrate that nail lamps are safe under normal conditions of use, and it has an importan