Ultherapy targets the deeper 4.5 mm SMAS layer using focused ultrasound for...

https://mega-wiki.win/index.php/Ultherapy_vs_Thread_Lift:_Which_Is_Better_for_a_Sharper_Jawline%3F

Ultherapy targets the deeper 4.5 mm SMAS layer using focused ultrasound for gradual tightening, with results peaking around 3 to 6 months. RF heats skin to 40-45°C for surface collagen boost but doesn’t reach SMAS