Vanquish is a nonsurgical body contouring procedure that’s FDA-cleared for fat reduction on the abdomen and thighs. The radiofrequency (RF) energy heats the fat layer, causing fat-cell death. Over the next weeks and months, your body removes the dead cells through the lymphatic system. During the 30-minute body contouring treatment, there is typically no pain. You may feel a mild to moderate heat sensation, with mild redness, warmth, and tissue tenderness.