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

https://nova-wiki.win/index.php/Secret_RF_vs_Thermage:_What_Is_the_Real_Difference%3F

Ultherapy targets the deep 4.5 mm SMAS layer using ultrasound to lift and tighten over 3 to 6 months, making results feel natural and gradual. RF heats skin to 40-45°C for collagen boost but works closer to the surface