Surfactant

BEANTRIMONIUM METHOSULFATE

Antistatic, hair conditioning, surfactant, emulsifying
Limited Data
Insufficient safety data available. Consider enriching this ingredient.
Details

Description

Antistatic, hair conditioning, surfactant, emulsifying

Purpose

Function

Antistatic, hair conditioning, surfactant, emulsifying
Profile

Properties

Silicone
Silicone free
Compliance

Regulatory Status

EU
Permitted
Safety
MODERATE
US
Permitted
Absorptionlow
Sensitizationlow
MoSnot established
NOAEL10 mg/kg
ConcernModerate
Verdict

Generally very well-tolerated; non-irritating at typical use levels; often cited as one of the gentlest cationic surfactants; not a sulfate-type surfactant despite the name. Quaternary ammonium salt (IUPAC: docosyltrimethylammonium methyl sulfate) typically derived from rapeseed oil; provides excellent detangling, anti-static effects, and emulsification; widely used in "clean beauty" and COSMOS-eligible formulations; requires a co-emulsifier/stabilizing agent (commonly cetearyl alcohol)

US Note

Allowed - not prohibited or restricted; CIR has reviewed quaternary ammonium compounds broadly

Assessment

Ratings

Comedogenic0/5
LowHigh
Irritancy0/5
LowHigh
Reference

Identifiers

Category
Surfactant
Updated
Apr 23, 2026

No registry identifiers available for this ingredient.