Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer for a natural...

https://alpha-wiki.win/index.php/Is_There_Downtime_After_a_Thread_Lift_in_Singapore%3F

Ultherapy uses focused ultrasound targeting the 4.5 mm SMAS layer for a natural lift that improves over 3 to 6 months. Compared to RF, which heats skin around 40 to 45°C to boost collagen, Ultherapy reaches deeper tissue without downtime