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

https://wiki-tonic.win/index.php/Does_Ultherapy_Hurt_and_What_Affects_Comfort%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