By stimulating the formation of collagen, PDO (Polydioxonone) Threads lift and tighten drooping skin tissues. The quick (30–90 minute) process leaves the skin feeling refreshed and with more vitality, suppleness, and brightness. https://www.worldfiller.com/product/intraline-pdo-threads-twin-t2750-20-threads-27g-50-70mm-7-0-x2/