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

https://scarlettssuperbnews.inkharbory.com/posts/ultherapy-vs-standard-hifu-what-did-the-2024-study-say

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