Ultherapy targets the deep 4.5 mm SMAS layer with ultrasound to lift and...

https://www.bookmarkingqueen.win/ultherapy-uses-focused-ultrasound-targeting-the-4-5-mm-smas-layer-for-deep-skin

Ultherapy targets the deep 4.5 mm SMAS layer with ultrasound to lift and tighten over 3 to 6 months. RF heats skin to 40-45°C for collagen boost but works more superficially