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

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

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