The fats of females are prone to get deposited at the posterior and medial sides of the arm and are generally difficult to reduce by exercise or weight loss. Besides, due to frequent daily activities, accumulated fat loads are highly likely to cause laxity of the arm skin, thus resulting in “butterfly sleeves,” which become a common disturbance in senile or postpartum women. Moreover, arm fat deposits associated with obesity are the most common cause of surgery. If patients are willing to get rid of arm cellulites in a distinct and quick manner, arm liposuction is the most efficient method. Such a surgery is mainly confined to the posterior two-third circle of the arm and is conducted by making a 5-mm incision along the skin fold at the border of the arm and upper back through which hemostatics and painkillers are injected into the affected site. Then, Dr. Chuang uses the Ultra-Z ultrasonic lipolysis and liposuction machine to remove emulsified fats. If the patient has a combined hypertrophic upper back or accessory breasts, liposuction is simultaneously performed to obtain a complete reduction in fat volume. Liposuction is forbidden at the anterolateral one-third portion of the arm due to the adhesion of the biceps; otherwise, it commonly causes skin depression due to the exertion of muscles.