Now, viruses and bacteria are really, really, really small, so the far-UVC light can certainly penetrate them and kill them, but what it can't do is penetrate into skin, and it can't even penetrate the dead-cell area right at the very surface of our skin.
Vírus e bactérias são extremamente pequenos, logo, a luz far-UVC pode certamente penetrá-las e matá-las, mas não consegue penetrar na pele, nem mesmo na área de células mortas, bem na superfície de nossa pele.