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Hair Conditioning

QUATERNIUM-18

CAS 61789-80-8
42

Safety score · 0–100

Moderate

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

A dialkyl quaternary ammonium hair conditioner. Effective but carries serious eye damage and aquatic toxicity hazards plus a reproductive toxicity suspicion flag.

Function

ANTISTATICHAIR CONDITIONINGSURFACTANT - CLEANSING

Skin benefits

  • Hair conditioning, anti-static
  • Anti-frizz and softening
  • Used in clay gellants
  • Effective at low %

Known concerns

  • GHS H318 serious eye damage
  • H315 skin irritation, H361 reproductive toxicity suspected
  • H410 very toxic to aquatic life
  • Substantive residue on skin/hair

References

EU

EU CosIng database

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

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GLYCIDOXY DIMETHICONE
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ISOPROPYL THIOGLYCOLATE
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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.