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

https://www.bookmarkidea.win/ultherapy-uses-focused-ultrasound-to-target-the-4-5mm-smas-layer-promoting

Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer to lift and tighten deeper tissues, with results peaking around 3 to 6 months. Compared to RF, which heats skin layers to 40-45°C for surface tightening, Ultherapy reaches deeper