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Hair Conditioning

QUATERNIUM-16

CAS 64425-88-3 / 35239-12-4
70

Safety score · 0–100

Fine

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

A cationic quaternary ammonium conditioner — reduces static and tangles in hair products. Generally fine in rinse-offs; data is thinner than the more common quats, so use awareness with leave-on use.

Skin benefits

  • Hair conditioning and antistatic
  • Reduces hair tangling
  • Compatible with most surfactant systems

Known concerns

  • Quaternary ammonium can irritate eyes and mucosa
  • Limited public CIR/SCCS data on this specific quat
  • Use rinse-off preferred over leave-on

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.