What Are Breast Threads? Types, Materials and Intended Purpose

Thread procedures place thin, sterile threads under the skin. They have been used in the face and body for lifting or skin support. This page is part of our guide to breast thread procedures.

Materials

Most absorbable threads are made from polydioxanone (PDO), also used in dissolvable stitches. Others use polylactic acid or polycaprolactone. Non-absorbable threads exist but are used differently.

Types

• Smooth (mono) threads: designed mainly to stimulate the skin. See mono threads
• Barbed or cog threads: have small barbs or cones designed to grip tissue for a mechanical lifting effect
• Screw or twisted threads: a spiral shape, often used for a volumising effect in the skin

The intended idea

Cog threads are placed to hold or lift tissue; the body's response around the thread may stimulate collagen. Marketing for breast use often claims lift and enhanced shape.

Evidence in the breast

Threads were developed and mostly studied for facial and some body use. High-quality evidence for breast enlargement or lift is limited, and threads are not designed to add significant volume.

Regulatory status

Many threads are cleared or registered as surgical sutures. Approval for aesthetic breast use varies and may be absent. Ask what applies to the product, and read our page on approved versus off-label use.

Questions to ask

• What type and material are the threads?
• What is the intended effect in my breast?
• What evidence exists for breast use?