LED therapy masks use specific light wavelengths for at-home skincare treatments. Red light is used to improve fine lines, while blue light targets acne-causing bacteria. Users should follow safety ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." With eight different wavelengths, including near-infrared, and a snug fit that ensures even contact ...

Light-emitting diodes (LEDs) are so ubiquitous that it's easy to forget just how much society relies on these underappreciated technological wonders. Yet, the history of the LED goes back further than ...