Learn more › Practically every beauty influencer that shows up on my TikTok feed owns an LED face mask. Sure, you serve Hannibal Lecter realness while sporting one, but do these fancy false ...

Red-light masks use low levels of light-emitting diode, or LED, to stimulate skin cells, says Dr. Jennifer Sawaya, a dermatologist at U.S. Dermatology Partners Scottsdale in Arizona.