Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, helping lift...

https://atavi.com/share/y0ukq9z4xuml

Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, helping lift and tighten deeper tissues. In contrast, RF heats skin to about 40-45°C mainly affecting surface collagen