By eMerrill
Rate: (22 Ratings)
LED (light-emitting diode) skin treatments, first developed by NASA in the 1970s to speed healing during space travel, are now available for at-home use with new handheld LED devices to treat acne and signs of skin aging. Like the devices used in spas and doctors' offices, these use specific wavelengths of light to treat different skin problems. Research is solidly behind the new products, which seem to work--slowly, perhaps, but very safely.