Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer, reaching...

https://www.bokkmarking-signs.win/ultherapy-uses-focused-ultrasound-targeting-the-4-5-mm-smas-layer-to-lift-and

Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer, reaching deep for lifting effects that build over 3 to 6 months. Compared to RF, which heats skin surface to 40-45°C for collagen tightening, Ultherapy penetrates deeper