Ultherapy targets the deeper 4.5 mm SMAS layer using focused ultrasound, making...

https://www.bookmark-tango.win/ultherapy-uses-focused-ultrasound-targeting-the-4-5-mm-smas-layer-to-encourage

Ultherapy targets the deeper 4.5 mm SMAS layer using focused ultrasound, making it ideal for lifting and tightening with natural results developing over 3 to 6 months. RF heats skin to 40-45°C for surface tightening but doesn’t reach the SMAS