Ultherapy targets the 4.5 mm SMAS layer with focused ultrasound, promoting...

https://mill-wiki.win/index.php/Best_Non-Surgical_Option_for_Mild_Laxity_in_Your_30s_in_Singapore

Ultherapy targets the 4.5 mm SMAS layer with focused ultrasound, promoting collagen over 3 to 6 months for gradual lifting. Compared to RF, which heats skin to 40-45°C mainly for surface tightening, Ultherapy reaches deeper layers