Polyquaternium-11
What is it?
Polyquaternium-11 is a cloudy, straw-colored liquid. In cosmetics and personal care products, it is primarily used in the formulation of hair care products with limited use in other product types.
Safety Information
The safety of Polyquaternium-11 has been assessed by the Cosmetic Ingredient Review (CIR) Expert Panel. The CIR Expert Panel evaluated the scientific data and concluded that Polyquaternium-11 was safe in the present practices of use. In 2002, as part of the scheduled re-evaluation of ingredients, the CIR Expert Panel considered available new data on Polyquaternium-11 and reaffirmed the above conclusion.
Why is it used in cosmetics and personal care products?
Scientific facts:
Polyquaternium-11 is the polymeric quaternary ammonium salt formed by the reaction of diethyl sulfate and a copolymer of vinyl pyrrolidone and dimethyl aminoethylmethacrylate. It is in the chemical class known as quaternary ammonium compounds (generally referred to as a “Quat”). These compounds are positively charged tetra-substituted nitrogen derivatives.
Polyquaternium-11 is available in two forms: approximately 50% Polyquaternium-11 dissolved in alcohol, and 19% dissolved in water with both forms referred to as “commercial Polyquaternium-11.” Pure, or undiluted, Polyquaternium-11 is not available for use in cosmetics and personal care products.
Polyquaternium-11 is available in two forms: approximately 50% Polyquaternium-11 dissolved in alcohol, and 19% dissolved in water with both forms referred to as “commercial Polyquaternium-11.” Pure, or undiluted, Polyquaternium-11 is not available for use in cosmetics and personal care products.
