Ultrasonic, Microcurrent, and Skin Scrubber facial unitUltrasonic+Microcurrent+Skin Scrubber Micro Current Skin Lifting System The Microcurrent Machine has two important functions during a facial treatment. Its main function is to introduce water soluble products into the skin. When using Biowave, there are two poles, negative( ) and positive(+). Microcurrent enhances the ability of active molecules to penetrate the skin surface. Its benefits are wide and far reaching: it increases the skins absorption