"Luce 4T LED Facial Therapy Wand FEATURES Made of aluminum completeoy, the LUCE 4T uses four types of therapy: Microcurrent Therapy: Uses low-level electrical currents to stimulate the muscles under the skin. This currency is responsible to the creation of eendin and collagen which keeps skin supple and plump LED https://www.youtube.com/watch?v=4jKZnNxfmm0