Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, making it...
https://hotel-wiki.win/index.php/Does_RF_Microneedling_Help_Sagging_or_Just_Texture%3F
Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, making it stand out for deeper tightening compared to radiofrequency’s surface-level heating of around 40 to 45°C. Standard HIFU often works at a shallower depth