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

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

Ultherapy targets the deeper 4.5 mm SMAS layer with ultrasound energy, lifting and tightening over 3 to 6 months. In comparison, RF heats skin to around 40 to 45°C for collagen boost but stays more superficial