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Conditioning Agent

POLYURETHANE-51

77

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A polyurethane nail conditioning copolymer that strengthens and protects nail plates by forming a flexible protective layer. Generally safe as cured polymer; the usual residual diisocyanate / acrylate monomer caveats apply.

Function

NAIL CONDITIONING

Skin benefits

  • Strengthens and protects nail plates
  • Forms a flexible protective layer
  • Comparable to traditional nail hardeners
  • High-MW polymer with limited skin penetration

Known concerns

  • Residual diisocyanate possible
  • Residual acrylate cap monomers possible
  • Microplastic environmental persistence
  • Compliance depends on monomer control

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.