VASER stands for Vibration of Sound Energy at Resonance. Essentially the VASER probes emit ultrasound energy that specifically targets fat cells leaving other tissues intact. The fat is subsequently emulsified (melted) by the ultrasound energy and can then be suctioned away using gentle suction probes. There is minimal damage to the surrounding muscle and fascia. VASER is an extremely gentle form of liposuction with some associated skin tightening and hence makes it a great option for gynaecomastia.