Behentrimonium Methosulfate
AKA “Docosyltrimethylammonium methyl sulphate, 5SHP745C61, EINECS 279-791-1, Behenyl trimethyl ammonium methosulfate, DTXSID00231231, BEHENTRIMONIUM METHOSULPHATE, EC 279-791-1, behenyltrimethylammonium methyl sulfate, N, N-Trimethyl-1-docosanaminium methosulfate
Surfactant
Ingredient Facts
Behentrimonium methosulfate
AKA: Docosyltrimethylammonium methyl sulphate, 5SHP745C61, EINECS 279-791-1, Behenyl trimethyl ammonium methosulfate, DTXSID00231231, BEHENTRIMONIUM METHOSULPHATE, EC 279-791-1, Behenyltrimethylammonium methyl sulfate, N-Trimethyl-1-docosanaminium methosulfate
Surfactant · Cleansing · EWG: 3
Synthetic
Cleanser
Skin Conditioner
Hair Care
Not Clean
Docosyltrimethylammonium methyl sulphate
Formula
C26H57NO4S
Mol. Weight
479.80
CAS #
81646-13-1, 241148-21-0
Form
Powder
See origin →
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
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
General
Pregnancy & Breastfeeding Safe
Yes
EWG
3
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-3
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR