Ultherapy targets the deep 4.5 mm SMAS layer using ultrasound energy,...

https://www.bookmarkingvictor.win/ultherapy-targets-the-4-5-mm-smas-layer-with-ultrasound-energy-reaching-deeper

Ultherapy targets the deep 4.5 mm SMAS layer using ultrasound energy, stimulating collagen over 3 to 6 months for gradual lifting. Compared to RF, which heats skin to 40-45°C mainly for surface tightening, Ultherapy offers deeper lift