Red light therapy masks and devices are hugely popular in the beauty world, as they combat the signs of anti-aging and make skin look more youthful. But do they work? Our Beauty News Editor investigates.

While these at-home devices can cost hundreds of dollars, one of our favorite red light therapy tools is currently under $100 during Amazon’s Big Spring Sale. WH editors got their hands on 14 devices to test, and the Fxtiaa LED-Face-Light-Therapy Panel earned a nod from the editors as the best panel red light therapy device.

However, one way to turn back time is to use a red light therapy device on your hands. These devices do the same thing for our hands as they do for our faces, including soothing irritation and stimulating collagen to smooth out fine lines.