Ultherapy targets the deeper 4.5 mm SMAS layer with ultrasound energy, lifting...
https://wiki-tonic.win/index.php/Ultherapy_Depth_Settings_%E2%80%93_What_Do_1.5_mm,_3.0_mm,_4.5_mm_Mean%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