Film Former
POLYCAPROLACTONE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Polycaprolactone — a biodegradable polyester used as a film-former and in delivery systems. Better environmental profile than most synthetic polymers, but still microplastic-class in powder form.
Polycaprolactone (CAS 24980-41-4) is a biodegradable aliphatic polyester with a long history of use in medical devices (FDA-cleared absorbable sutures and implants) and drug delivery. In cosmetics it appears as a film-former, controlled-release matrix, and occasionally in microsphere or powder form. It degrades by hydrolysis and microbial action more readily than most synthetic polymers, so its environmental persistence is lower than nylons or acrylates. However, intentionally added microparticles still fall under EU Regulation 2023/2055. Residual caprolactone monomer can occur at low levels in technical grades. Skin safety is well established for the polymer itself.
Skin benefits
- Biodegradable polymer base
- Film-forming
- Delivery-system matrix
Known concerns
- Microplastic classification in powder forms
- Possible residual caprolactone monomer
- Limited chronic leave-on cosmetic data
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related film formers
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.