Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer for a precise...

https://www.bookmark-suggest.win/ultherapy-targets-the-deeper-4-5-mm-smas-layer-using-ultrasound-energy

Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer for a precise lift, with results peaking around 3 to 6 months