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

https://qqpipi.com//index.php/Is_Ultherapy_Safe_Around_Nerves_and_Bone_Because_of_Imaging%3F

Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, offering a deep lift that tightens skin over 3 to 6 months. Compared to RF that heats at 40 to 45°C mainly in the dermis, Ultherapy goes deeper