Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer for deeper...

https://atavi.com/share/y0ukq9z4xuml

Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer for deeper lifting, with results peaking around 3 to 6 months. RF heats skin between 40 to 45°C to boost collagen, great for surface tightening but less depth