Ultherapy targets the deeper 4.5 mm SMAS layer with ultrasound energy, making...

https://www.nav-bookmarks.win/ultherapy-targets-the-deeper-4-5-mm-smas-layer-using-ultrasound-to-lift-and

Ultherapy targets the deeper 4.5 mm SMAS layer with ultrasound energy, making it unique compared to RF and standard HIFU that work more superficially around 40 to 45°C. Thread lifts offer immediate lift but with a shorter timeline