Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, reaching...
https://trulyexpatlifestyle.com/non-surgical-skin-tightening-in-singapore/
Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, reaching deeper than most RF treatments, which heat skin between 40 to 45°C for collagen boosting. Compared to standard HIFU, Ultherapy offers more precise energy delivery