Ultherapy targets the 4.5 mm SMAS layer using focused ultrasound, lifting and...

https://trulyexpatlifestyle.com/non-surgical-skin-tightening-in-singapore/

Ultherapy targets the 4.5 mm SMAS layer using focused ultrasound, lifting and tightening skin gradually with results peaking around 3 to 6 months. Compared to RF, which heats skin to 40–45°C for collagen boost, Ultherapy reaches deeper layers