Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer to lift and...

https://www.mediafire.com/file/et59n4ewy7unyct/pdf-24805-21355.pdf/file

Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer to lift and tighten skin gradually, with peak results around 3 to 6 months. Compared to RF treatments that heat skin to 40-45°C for collagen boost, Ultherapy penetrates deeper