Ultherapy targets the deeper 4.5 mm SMAS layer using ultrasound, offering a...

https://bizzmarkblog.com/is-ultherapy-fda-cleared-for-lifting-or-just-tightening/

Ultherapy targets the deeper 4.5 mm SMAS layer using ultrasound, offering a focused lift with results peaking around 3 to 6 months. RF heats skin to about 40-45°C, improving texture and mild tightening