Ultherapy targets the deep 4.5 mm SMAS layer with ultrasound to lift and...

https://cristiansinterestingthoughtss.opalvector.com/posts/what-treatment-is-best-for-neck-bands-and-laxity-in-singapore

Ultherapy targets the deep 4.5 mm SMAS layer with ultrasound to lift and tighten over 3 to 6 months. RF heats skin to 40-45°C for collagen boost but works more superficially