Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, promoting...

https://www.bookmark-xray.win/ultherapy-uses-focused-ultrasound-targeting-the-4-5-mm-smas-layer-making-it

Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, promoting gradual skin lift over 3 to 6 months. Compared to RF, which heats skin to 40-45°C mainly for surface tightening, Ultherapy reaches deeper for longer-lasting effects