PCL Threads FAQ

Q1. What are PCL threads?

PCL threads are absorbable lifting threads made from polycaprolactone, a biodegradable synthetic polyester. They provide temporary mechanical support while the treated tissue undergoes a gradual remodeling response.

PCL is a material family rather than one single product. The thread design, gauge, length, needle or cannula, intended use and absorption time depend on the specific SKU.

Q2. How long do PCL threads take to dissolve?

PCL threads generally absorb over approximately 1–1.5 years. Some products may have a different labeled period, so the exact timeline for a specific SKU should always be taken from its product IFU and packaging [1].

Absorption happens gradually. It does not mean that the visible result ends on the same day the material has absorbed.

Q3. How long do PCL thread-lift results last?

PCL thread-lift results are commonly assessed over 6–12 months. Some published follow-ups extend to approximately 2 years, but the duration varies by thread design, placement, tissue condition and patient response [2].

For that reason, a fixed result period should not be promised for every patient or every PCL product.

Q4. Do PCL threads stimulate collagen?

Yes. PCL threads may support a collagen-remodeling response around the treated area. Current evidence supports this mechanism, but it does not establish a fixed amount of collagen production or guarantee the same result for every patient.

Animal studies and small clinical studies provide supporting evidence, but they should not be presented as proof that PCL produces better results than another thread material [3].

Q5. Where can PCL threads be used?

PCL threads are commonly used for facial contour support, including the midface, lower face and jawline. The neck may be considered for selected patients when the specific product and treatment protocol support that use.

The intended treatment area depends on the product IFU. A product should not be promoted for a body area that is not covered by its labeling or clinical documentation.

Q6. Can PCL threads be used for the neck or body?

PCL threads may be used for selected neck treatments, but neck procedures require careful assessment because the area contains important vascular and neural structures. Body use should be evaluated more cautiously because evidence and product indications may be limited.

Whether a PCL thread is suitable for the neck or body depends on the specific product, the practitioner’s technique and the patient’s anatomy. The treating physician makes the final decision.

Q7. Are PCL threads biocompatible?

PCL has a long history of use in absorbable medical materials and is generally described as a biodegradable, biocompatible polyester. However, the material name alone does not prove that every PCL thread product is suitable for every use.

Product-level safety depends on the formulation, manufacturing process, sterility, registration documents, intended use and IFU. As with any invasive procedure, individual risks should be discussed with a qualified practitioner. Biocompatibility assessment for medical devices is addressed through the ISO 10993 framework [4].

Q8. What should I check for a specific PCL thread product?

For a specific PCL thread, check the product documentation for:

  • material and thread design;
  • gauge and thread length;
  • needle or cannula specifications;
  • intended application and contraindications;
  • sterilization and packaging information;
  • shelf life and storage conditions; and
  • the labeled absorption timeline.

These details can vary between SKUs. The product IFU and packaging are the controlling sources for the exact item.

References

[1] Hong GW, et al. “Thread Lifting Materials: A Review of Its Difference in Terms of Technical and Mechanical Perspective.” Clinical, Cosmetic and Investigational Dermatology, 17, 999–1006. 2024. https://pubmed.ncbi.nlm.nih.gov/38737945/ · Full text: https://pmc.ncbi.nlm.nih.gov/articles/PMC11086642/

[2] Riopelle A, et al. “Update on Absorbable Facial Thread Lifts.” Dermatologic Surgery, 51(5), 509–514. 2024–2025. https://pubmed.ncbi.nlm.nih.gov/39662017/

[3] Cho MH, et al. “Efficacy study of the new polycaprolactone thread compared with other commercialized threads in a murine model.” Journal of Cosmetic Dermatology, 20(9), 2743–2749. 2021. https://pubmed.ncbi.nlm.nih.gov/33421303/

[4] ISO 10993-1:2018. Biological evaluation of medical devices — Part 1: Evaluation and testing within a risk management process. https://www.iso.org/standard/68936.html