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

https://devinmqjy235.iamarrows.com/secret-rf-vs-thermage-what-is-the-real-difference

Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, reaching deeper than most RF treatments that heat skin to around 40 to 45°C. Compared to standard HIFU, Ultherapy delivers more precise energy for lifting