A complete whitening solution that uses sonochemistry to provide an immediate boost, both in-office and (for further results) at home. Clinically proven to whiten 2–6 shades in only 4 min. of treatment without causing tooth sensitivity. Allows the process of using ultrasonic vibration to produce chemical reactions with enormous energy. Ultrasonic system causes rapid activation of hydrogen peroxide. Efficient delivery of peroxide means a lower level of peroxide needed, at 12%.