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Hair Conditioning

BEHENTRIMONIUM METHOSULFATE

CAS 81646-13-1 / 241148-21-0 Updated
78

Safety score · 0–100

Fine

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

About

A gentle hair-conditioning quat famous for detangling without buildup. CIR-reviewed and widely considered the mildest of the conditioning quats at cosmetic levels.

Skin benefits

  • Hair conditioning that detangles without heavy buildup
  • Mild quat with low irritation profile
  • Excellent slip and softening for fine and curly hair

Known concerns

  • Cationic surfactant; eye irritation if not rinsed properly
  • Always paired with cetearyl alcohol carrier
  • Not significant beyond surface conditioning

References

EU

EU CosIng database

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

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

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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.