The device slightly elevates the other tissues in the area, increasing their heat to 104-105 degrees Fahrenheit. The cells are not affected at this temperature so they will not be harmed during Vanquish fat-removal treatments. Patients can feel a warm sensation while the machine does its work, but it is not uncomfortable or painful, and likened to standing near a radiator. After a treatment session, common side effects can include mild redness and tenderness of the tissues, which usually fade in about an hour post-procedure. There is no downtime and patients can resume normal activities immediately. Since the procedure is non-invasive (meaning no incisions), there is no healing time.