The Lab
Specimen No. 0145
ClearedSyntheticantimicrobialsurfactant

Behentrimonium Chloride

behentrimonium chloride · btc · docosyltrimethylammonium chloride

A quaternary ammonium salt used as a conditioning and detangling agent in hair care. The CIR approves concentrations up to 10%. Non-irritating at 5% and non-sensitizing at 2.4% in clinical testing. Eye irritant at high concentrations — avoid eye contact.

medium confidence
Researched April 18, 2026

Concerns

  • Eye irritant — avoid contact with eyes
  • Environmental toxicity to aquatic organisms (quaternary ammonium compounds)

Commonly found in

ConditionerHair maskLeave-in conditionerDetangler

Research disclaimer: This rating is based on available peer-reviewed research and regulatory assessments at the time of publication. It is not medical advice. Consult a qualified professional for personal health or skin concerns.

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