PDO stands for polydioxanone, Mint PDO refers to an absorbable form of PDO threads. They are barbed sutures that is used in wound closure. PDO threads are thinner than hair and are made of protein.
The goal with the use of PDO threads is to give your skin a mechanical lift all while relaxing your tendons and muscles. Your blood flow to that area is improved along with the promotion of neocollagenesis. This dictates the collagen in places to give you a more defined look.