When we think about disinfecting, wipes, gels, and sprays often come to mind, but what about light? UV light has been known for over a century as a powerful germ killer, yet it’s been largely overlooked. But why? For many, the it’s all about the association with harmful UV rays from the sun, which can cause cancer.

Fortunately, researchers have made strides in finding a solution. Enter far-UVC light, specifically at a wavelength of 222 nanometers. This type of UV light is powerful enough to kill germs but lacks the penetration to harm human skin. Could far-UVC light be our next line of defense against germs? Discover more about its promise and pitfalls in this illuminating video from VOX.