PDO threads are absorbable synthetic fibres that are threaded under the skin using small needles- a technique that is similar to those employed by medical professionals to sew soft tissue together. It takes approximately 200 days for the PDO (Polydioxanone) threads to disslove once they have been implanted. This procedure lifts and tightens the skin over time by including collagen products, resulting in a rejuvenated appearance. Cosmetics application of the PDO threads was first developed in Korea, where it has now become one of the most popular.