Ultrasound energy is the key to the skin tightening prowess of Ultherapy®. Ultrasound energy has been used across the medical world for decades, most notably for fetal ultrasound, and has proven to be safe and very effective. Ultherapy® is a gentle, non-invasive ultrasound treatment that pushes back against decreasing collagen production and sagging skin due to gravity and natural aging. This FDA-cleared procedure uses ultrasound to initiate new collagen production in the dermis layer of the skin. This collagen boost lifts, tightens, and tones the skin on the face, neck, and décolletage.