An arm lift, also known as brachioplasty, is a surgical procedure that tightens and smooths the skin of the upper arms. This procedure removes excess skin and fat, improving the contour and definition of the arms. Arm lifts are often sought after by individuals who have experienced significant weight loss or have sagging skin due to aging. The procedure involves incisions along the underside of the arm, and the extent of the incision depends on the amount of excess skin.