OH DAISEY INGREDIENT LIBRARY
Behentrimonium Methosulfate
Despite the word “methosulfate,” it is not a sulfate cleansing surfactant; it is a quaternary conditioning ingredient with a favorable safety profile at cosmetic use levels.
OH DAISEY VERDICT
Approved
Evidence level: Strong
Why Oh Daisey rates it this way
Despite the word “methosulfate,” it is not a sulfate cleansing surfactant; it is a quaternary conditioning ingredient with a favorable safety profile at cosmetic use levels.
What it does
Improves detangling, softness, slip, and manageability and helps stabilize conditioning formulations.
How to read this rating
This rating reflects the Oh Daisey ingredient standard and the evidence currently available for cosmetic use. Product safety can also depend on concentration, exposure route, formulation, manufacturing quality, and individual sensitivity.