... ; 4. CE Approval. Skin Scrubber, Ultrasonic, Galvanic and Hot&Cold Hammer Beauty Machine BL-855 (CE Approval)Beauty Equipment BL ... per second (1 MHz). The ultrasonic wave could stimulate skin tissue and improve permeability of the membrane to promoted collagen tissue, ... , such as astringent, into the skin. Skin Scrubber, Ultrasonic, Galvanic and Hot&Cold Hammer Beauty Machine BL-855 (CE Approval) ...