The cavitation uses an ultrasound cavitation effect, that breaks air bubbles around the fat cells. This breaks the fat cell membrane and dissipates the fat as waste into the rest of the body. The waste is then either removed from the body through the lymphatic system or burnt as energy similar to food.
The Cavi-Lux also includes the RF technology to simultaneously tighten the skin as the fat is removed.
See the treatment list here.