Polyquaternium

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Polyquaternium or poly(diallyldimethylammonium chloride) is a mildly irritating toxic and permanently charged polymer which occurs as a colorless transparent viscous liquid. It is used as a conditioner in cosmetic products such as shampoo, mousse, hair spray, and hair dye. Its permanent charge arises from a quaternary amine which is hydrophilic. This is connected to the polymerized backbone which is hydrophobic causing the particular feeling of conditioning associated with shampoo and conditioner.

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