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

https://www.bookmark-ignite.win/ultherapy-uses-focused-ultrasound-targeting-the-4-5-mm-layer-beneath-the-skin

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