Behentrimonium Methosulfate

AKA: Docosyltrimethylammonium methyl sulphate, Behenyl trimethyl ammonium methosulfate, BEHENTRIMONIUM METHOSULPHATE, Behenyltrimethylammonium methyl sulfate, N-Trimethyl-1-docosanaminium methosulfate
Synthetic
Cleanser
Skin Conditioner
Hair Care
Not Clean
OriginDerived 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.
Docosyltrimethylammonium methyl sulphate
Formula
C26H57NO4S
Mol. Weight
479.80
CAS #
81646-13-1, 241148-21-0
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Antistatic
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Reduces Static
Conditions Hair
Cleansing Surfactant
Lifts away dirt and oil
Reduces flyaways
Softens and detangles hair
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
3
CIR
Safe as used
Pregnancy
Yes
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR