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Hair Conditioning

POLYQUATERNIUM-56

66

Safety score · 0–100

Fine

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

A cationic polyurethane-quaternary polymer used for hair styling and conditioning. Polymer is well-tolerated; main caveats are residual isocyanate monomer from manufacturing and standard cationic-irritation risk.

Function

FILM FORMINGHAIR CONDITIONING

Skin benefits

  • Film-forming and hair conditioning
  • Anti-static effect
  • Improves wet combability
  • Long-wear hair styling

Known concerns

  • Quaternary ammonium — eye irritation potential
  • Trace residual diisocyanate possible
  • Not biodegradable
  • Limited cosmetic-specific safety data

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.