Ultherapy in Singapore uses focused ultrasound targeting the 4.5 mm SMAS layer...

https://bluecircuitry.com/s/Pr8Tj2drHEIPqPuq_XfUq

Ultherapy in Singapore uses focused ultrasound targeting the 4.5 mm SMAS layer to lift and tighten skin gradually, with results peaking around 3 to 6 months