Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer for a gradual...

https://www.hometalk.com/member/254051008/alice1337254

Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer for a gradual lift, with results peaking around 3 to 6 months. Radiofrequency heats tissue to 40-45°C for collagen tightening but works more superficially