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

https://wiki-stock.win/index.php/What_Age_Is_Best_for_RF_Tightening%3F_Focus_on_Your_30s_to_Early_40s

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