Loose upper arm skin is most often related to weight loss. If you were ever overweight, you more than likely developed heavy upper arms. To accommodate the increased volume of the upper arms, your skin stretched. After weight loss, skin often fails to tighten, and so it sags. The only way to improve this problem is through an arm lift, also called brachioplasty. Is Liposuction an Option? Not if your problem is due to loose skin. The only time lipo is a better choice is when there is a lot of fat and the skin is tight. When the skin is loose, brachioplasty surgery is usually the best choice.Incisions and Scars in Arm Lift Scars are the greatest drawback of this operation. They will extend from the armpit to the elbow, along the inside of the arm. This operation exchanges one cosmetic problem (loose skin) for another (scars). In general, those with very loose saggy skin are most likely to find this exchange worthwhile. Those with a small amount of looseness will probably not want the scars.