Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer, stimulating...

https://www.hometalk.com/member/254051008/alice1337254

Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer, stimulating collagen deep beneath the skin. It’s precise and non-invasive, with results peaking around 3 to 6 months