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

https://www.bookmarking-fox.win/ultherapy-uses-focused-ultrasound-targeting-the-4-5-mm-smas-layer-unlike-rf

Ultherapy targets the deeper 4.5 mm SMAS layer with focused ultrasound energy, stimulating collagen over 3 to 6 months for a gradual lift