"Luce 4T LED Facial Therapy Wand FEATURES Made of aluminum absoluteoy, 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 in order to the creation of egoalin and collagen which keeps skin supple and https://www.youtube.com/watch?v=_Rp6jp2Dw14