Regulatory Status
For full compliance data across 55 jurisdictions, use the Substance Compliance tool.
Safety Data
Calculate MoS for your specific formulation with the MoS Calculator.
Expert 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)
Regulatory Flags
Frequently Asked Questions
Is Behentrimonium Methosulfate safe in cosmetics?
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) The EU classifies Behentrimonium Methosulfate as "permitted". Safety rating: MODERATE.
Is Behentrimonium Methosulfate allowed in the EU?
Behentrimonium Methosulfate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Behentrimonium Methosulfate do in cosmetics?
Behentrimonium Methosulfate functions as: Antistatic, hair conditioning, surfactant, emulsifying. It is classified as a cosmetic ingredient in our database. CAS number: 81646-13-1.
What is the Margin of Safety for Behentrimonium Methosulfate?
not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.
Compliance Tools
Check Behentrimonium Methosulfate compliance across multiple jurisdictions:
Related Ingredients
Is Behentrimonium Methosulfate in Your Products?
Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.
Try Piro Free →Analyze Your Full Ingredient List
Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Behentrimonium Methosulfate in your formulation.