We spent a year testing the best red light masks. We found 5 we love and 2 to avoid.

How to choose an LED face mask: Look at wavelength firstThere are some ways to tell that a red light face mask won't be effective before you buy it and use it for a few months. Wavelength is the first factor anyone will tell you to consider. You want to find products that emit light within the therapeutic window, or the range of wavelengths that can be effective when treating common skin conditions. There is now an abundance of evidence that specific wavelengths of red light can be effective for