Polydioxanone is a complex sugar that naturally breaks down into carbon dioxide and water, and these are eventually dissolved by the body. Aesthetic use of these threads is an advanced technique that's been used for years by many overseas to maintain youthful skin and the results speak for themselves. This secret is out at Imber! These are the same safe, dissolvable threads used in eye and heart surgeries. When placed in the face, "Smooth" PDO threads lead to growth and remodeling of your body's own collagen as well as improvement in the thickness, texture and elasticity of the skin! PDO threads can be used in all areas.