"Luce 4T LED Facial Therapy Wand FEATURES Made of aluminum alloy, the LUCE 4T styles four types of therapy: Microcurrent Therapy: Uses low-level electrical currents to stimulate the muscles under the skin. This currency is responsible for the purpose of the creation of elaterin and collagen which keeps skin supple https://www.youtube.com/watch?v=X7uw4LqD4Ys