Ultherapy uses ultrasound to target the 4.5 mm SMAS layer, stimulating collagen...
https://wiki-stock.win/index.php/Why_Is_Imaging_Such_a_Big_Deal_in_Ultrasound_Skin_Tightening%3F
Ultherapy uses ultrasound to target the 4.5 mm SMAS layer, stimulating collagen deep under the skin. It’s known for precise depth control and visible results that develop over 3 to 6 months