Polyquaternium-89
INCI: POLYQUATERNIUM-89
Reviewed by Rosie · Last updated 18 Aug 2026
What Is Polyquaternium-89?
Polyquaternium-89 is a polymeric quaternary ammonium salt prepared by the reaction of t-butyl acrylate, vinyl pyrolidone, dimethylaminopropyl methacrylamide, methacrylic acid and ethyldimethyl[2-[(2-methyl-1-oxoallyl)oxy]ammonium ethyl sulfate, neutralized with orthophosphoric acid.
Its declared cosmetic function is film forming.
Source: European Commission CosIng inventory.
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