Red light therapy products—wands, masks, full-body panels—have gotten a lot of attention this year. But some of the best red light therapy devices cost a pretty penny. So, do they live up to the hype or are they just another pricey device that'll end up gathering dust in your medicine cabinet? Our editors have spent the last six months getting to the bottom of it.

We spoke to numerous dermatologists to learn all about the proven technology, plus tested dozens of red light therapy devices of all kinds. Some of these devices operate at multiple wavelengths (blue, amber, infrared) for even more skin care benefits. Our top overall red light therapy tool is the .

Sure, it's a handheld option, but it's easy to store and start using right away, bundles four skin treatments into a single tool, and portable enough for your next vacay. Oh yeah, and we saw some pretty great results during testing, too. : | | | | | | | | | | | Amazon Amazon Nordstrom HigherDose Amazon Sephora Nordstrom Cult Beauty Blue Mercury First, the basics: is “a noninvasive treatment that uses low level light to do what we call photobiomodulation,” says , a board-certified dermatologist and founder of SmarterSkin Dermatology in New York City.

Put more simply, it’s a treatment that uses low-wavelength red light and near-infrared light to penetrate cells, activating a repair process within the cells themselves that can help reduce inflammation, speed up wound healing, and even reverse signs of aging..