Ultherapy in Singapore targets the deeper 4.5 mm SMAS layer using ultrasound...

https://mill-wiki.win/index.php/What_Age_Is_Best_for_RF_Tightening%3F_Focus_on_Your_30s_to_Early_40s

Ultherapy in Singapore targets the deeper 4.5 mm SMAS layer using ultrasound for natural lifting, with results peaking around 3 to 6 months. Compared to RF, which heats skin to 40-45°C mainly for collagen tightening, Ultherapy reaches deeper tissues