An arm lift, medically known as brachioplasty, is a surgical procedure that removes excess skin and fat from your upper arms while tightening underlying tissues. This creates smoother, more toned-looking arms that better match your body proportions.During the procedure, your surgeon makes an incision typically along the inside or back of your upper arm, extending from your elbow to your armpit. Through this incision, they remove excess sagging skin and fat, then tighten and smooth the remaining tissue. The result is firmer, more contoured upper arms with improved definition.Arm lifts are particularly effective for people who have lost significant weight or experienced age-related skin laxity. When diet and exercise have toned your arm muscles but loose, hanging skin remains, an arm lift addresses what workouts cannot fix. The procedure reshapes your upper arms from armpit to elbow, eliminating the "bat wing" appearance that many find frustrating.