Light therapy originated when NASA scientists began using red and blue LED lights for growing plants ... I entered the private spa room and got comfy on the massage table. A staff member wrapped ...

Full-face LED masks like this one can cost up to several thousand U.S. dollars. The application of red light can stimulate collagen production and blood circulation, and even reduce signs of aging.

“At-home LED devices, particularly those that combine red and blue light, are efficacious for acne and can likely complement other over-the-counter and prescription treatments,” they wrot ...