AccuLiner Ultrasound Therapy, using focused ultrasound technology, is suitable for non-invasive skin lifting and tightening. The focused ultrasound heats skin up at one time, and the heat energy penetrates deep into the SMAS (superficial musculoaponeurotic system) layer, and the target tissue is heated in a point-like manner, inducing collagen contraction and collageneogenesis, so as to improve the lines and wrinkles.