Ultrasound cavitation is a non-invasive body contouring treatment that uses low-frequency ultrasound waves to help break down stubborn fat cells.A handheld device sends ultrasound waves into the fat layer. The sound waves create tiny bubbles in fat cells. Those bubbles cause the fat cell walls to break down. The liquified fat is then processed and eliminated naturally through the lymphatic system. No needles. No surgery. No anesthesia.