Polyquaternium-11
Avoid
Film Former; Antistatic Polymer; Hair-Conditioning Agent
Also Known As
PQ-11; Vinylpyrrolidone/Dimethylaminoethyl Methacrylate Copolymer Diethyl Sulfate
CAS Number
53633-54-8
What It Does
Provides hold, reduces static, and improves hair texture and manageability.
Why Oh Daisey Rates It This Way
Irritation may occur in concentrated form. Residual monomers may be a concern if manufacturing controls are inadequate, but the finished high-molecular-weight polymer is expected to have low dermal absorption. It may contain acrylamide as an impurity, which is toxic to the nervous system and a probable carcinogen.
Evidence Level
Moderate