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

https://alpha-wiki.win/index.php/Is_There_Downtime_After_a_Thread_Lift_in_Singapore%3F

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