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

https://www.yankee-bookmarkings.win/ultherapy-uses-focused-ultrasound-targeting-the-4-5-mm-smas-layer-offering

Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer to lift and tighten skin gradually, with peak results around 3 to 6 months. Compared to RF treatments that heat skin to 40-45°C for collagen boost, Ultherapy penetrates deeper