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

https://xeon-wiki.win/index.php/Does_Ultherapy_Hurt_and_What_Affects_Comfort%3F

Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, promoting collagen deep under the skin with minimal downtime. Results build gradually, peaking around 3 to 6 months