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

https://highstylife.com/thermage-vs-10therma-are-they-both-monopolar-rf/

Ultherapy targets the deeper 4.5 mm SMAS layer using ultrasound energy, encouraging natural collagen build-up with results peaking around 3 to 6 months