Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, stimulating...

https://trulyexpatlifestyle.com/non-surgical-skin-tightening-in-singapore/

Ultherapy uses focused ultrasound to target the 4.5 mm SMAS layer, stimulating collagen deep under the skin for gradual tightening. It’s known for visible improvements over 3 to 6 months