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Hair Conditioning

BIS-HYDROXYETHYL TALLOWMONIUM CHLORIDE

CAS 67784-77-4 Updated
55

Safety score · 0–100

Moderate

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

About

A tallow-derived quaternary ammonium hair conditioner with two hydroxyethyl groups. Effective in conditioning rinses but irritating to eyes and lacks a clean nitrosamine-impurity profile.

Function

ANTISTATIC

Skin benefits

  • Conditions hair and reduces static
  • Cationic — substantive to damaged hair
  • Effective at low use levels

Known concerns

  • Quaternary ammonium — eye and mucous-membrane irritant
  • Tallow source raises ethical/quality concerns
  • Potential nitrosamine concern with secondary amine impurities
  • Aquatic toxicity

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 — always read the physical product label and consult a healthcare professional for personal concerns.