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Behentrimonium Methosulfate
AKA “Docosyltrimethylammonium methyl sulphate, EINECS 279-791-1, Behenyl trimethyl ammonium methosulfate, BEHENTRIMONIUM METHOSULPHATE, EC 279-791-1, behenyltrimethylammonium methyl sulfate, N-Trimethyl-1-docosanaminium methosulfate”
Synthetic
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Ingredient Facts
Behentrimonium methosulfate
AKA: Docosyltrimethylammonium methyl sulphate, EINECS 279-791-1, Behenyl trimethyl ammonium methosulfate, BEHENTRIMONIUM METHOSULPHATE, EC 279-791-1, Behenyltrimethylammonium methyl sulfate, N-Trimethyl-1-docosanaminium methosulfate
Synthetic · Antistatic | Hair Conditioning | Surfactant - Cleansing · EWG: 3
Plant-Derived
Cleanser
Skin Conditioner
Hair Care
Synthetic
Clean
A synthetic conditioning agent that smooths hair, reduces frizz, and helps cleanse while leaving strands soft and manageable.
Formula
C26H57NO4S
Mol. Weight
479.80
CAS #
81646-13-1, 241148-21-0
Form
Powder
Plant-Derived
Synthetic. Derived from behenic acid (a long-chain fatty acid) and dimethylamine, both sourced from petroleum or vegetable oils. Synthesized through quaternization of dimethylaminopropylamine with behenic acid or its derivatives.
Function
Antistatic | Hair Conditioning | Surfactant - Cleansing
Benefits
Reduces Static
Conditions Hair
Cleansing Surfactant
Lifts away dirt and oil
Reduces flyaways
Softens and detangles hair
Traditional Use
A synthetic cationic conditioning polymer based on behenic acid, created in modern times as a gentler alternative to harsher quaternary ammonium compounds for hair and skin care.
Skin Types
all-skin-types
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score3
CIR Safety Findings
ewg-3, medical-approval, all-shades-safe, Not a Sensitizer
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR
Behentrimonium Methosulfate — Duck Heart Ghost