PDO collagen threads: what to know

Polydioxanone is a material used to make absorbable medical sutures. In cosmetic treatment, smooth or barbed threads may be placed under the skin through small entry points. Barbed designs can provide mechanical support, while the body gradually breaks down the material and produces a healing response around it. The effect is more subtle than a surgical facelift and does not correct every type of laxity, fold, or volume loss.

Choose a qualified medical practitioner who can explain the thread design, placement, expected change, and alternatives. Review medicines, allergies, active skin disease, dental or surgical plans, and any history of abnormal scarring. After placement, follow instructions about facial movement, pressure, exercise, and skin care. Bruising, swelling, tenderness, dimpling, asymmetry, infection, thread visibility, or thread extrusion are possible concerns. The [Thread Lift](/treatments/aesthetic-procedures/thread-lift/) page covers the procedure, while [Polydioxanone Thread](/materials/polydioxanone-thread/) explains the material.

Contact the practitioner promptly for increasing redness, warmth, drainage, fever, worsening pain, or skin opening. Urgent assessment is needed for severe swelling, facial weakness, trouble swallowing, or breathing difficulty. A persistent visible thread, new asymmetry, or a firm painful lump also deserves review rather than manipulation at home.

Which thread type and placement fit my concern? How long might swelling or asymmetry last? What are the alternatives, including surgery or injectable treatment? Who will manage a visible thread or infection if it occurs?