Ultherapy uses focused ultrasound targeting the 4.5mm SMAS layer, stimulating...

https://echo-wiki.win/index.php/Thermage_vs_10THERMA_%E2%80%93_Are_They_Both_Monopolar_RF%3F

Ultherapy uses focused ultrasound targeting the 4.5mm SMAS layer, stimulating collagen deep within for lifting that peaks around 3 to 6 months