Polyquaternium is the International Nomenclature for Cosmetic Ingredients designation for several polycationic polymers that are used in the personal care industry.
Polyquaternium is a neologism used to emphasize the presence of quaternary ammonium centers in the polymer.
The numbers are assigned in the order in which they are registered rather than because of their chemical structure.
Their positive charges also ionically bond them to hair and skin.
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