"Luce 4T LED Facial Therapy Wand FEATURES Made of aluminum alloy, the LUCE 4T be in fashions four types of therapy: Microcurrent Therapy: Uses low-level electrical currents to stimulate the muscles under the skin. This currency is responsible compared to the creation of elastin and collagen which keeps skin supple https://www.youtube.com/watch?v=fZ5xdCCMmx4