An upper arm lift is also called a brachioplasty. The procedure helps to improve the look of the upper arm. The procedure can remove excess skin from the area. Excess skin may be caused by significant weight loss or due to the effects of aging. The muscles and tissues of the upper arm may cause a loss of thickness, a loss of elasticity, and a loss of adherence to the underlying tissue. In some cases, even gravity can cause the sagging of the skin at the underside of the upper arm. The deep layers of fat, muscle and bone will thin over time as well, creating more of a pronounced sagging look. A brachioplasty or upper arm lift can significantly improve the look of the arm.