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Hair Conditioning

POLYQUATERNIUM-9

Updated
38

Safety score · 0–100

Caution

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

About

A quaternary ammonium polymer used to condition hair and reduce static. Cured polymer is reasonably inert, but residual acrylamide monomer (IARC Group 2A probable carcinogen) drives the cautionary score.

Function

ANTISTATICFILM FORMING

Skin benefits

  • Antistatic
  • Hair conditioning
  • Film-former

Known concerns

  • Residual acrylamide IARC 2A
  • EU monomer limits
  • Skin/eye irritation
  • Persistent in environment

References

EU

EU CosIng database

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

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MINOXIDIL SUCCINOYL OLIGOPEPTIDE-143
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STEARALKONIUM DIMETHICONE PEG-8 PHTHALATE
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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.