An arm lift is done to remove excess skin from the upper arm area. An upper arm lift is part of a cosmetic surgery procedure called ‘brachioplasty’ which is designed to remove skin and fat from various body areas. This sagging skin in the upper arm is usually caused by weight loss. However, the natural ageing process also causes skin to lose elasticity naturally. Many individuals find that the arms, in particular, lose their firmness as the layers of muscle and supporting fat become thinner. In such cases, an arm lift can help to restore and tighten these areas, giving a much firmer, youthful look and leaving you more confident to wear sleeveless tops and dresses.