PDO threads use no tapers or hooks to raise the tissue and seal the skin in to position. Instead, a special thread weave containing polydioxanone is used to gently achieve the lifting effect. Polydioxanone contains chemicals that increases synthesis levels of collagen and elastin, helping to tighten and smooth the contours of the face. These beauty lift threads were created in South Korea in 2009, they have since taken the world by storm!