Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer to lift and...

https://www.bookmarking-jet.win/ultherapy-uses-focused-ultrasound-energy-to-target-the-4-5-mm-smas-layer-deep

Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer to lift and tighten skin, with results peaking around 3 to 6 months