Young Chemist Polyquaternium 7 (PQ-7) is a cosmetic chemical widely used in personal care products due to its beneficial properties. It is a cationic polymer that provides multiple benefits for the hair and skin. Here is a description of the benefits, instructions for use, and cautions associated with PQ-7: Polyquaternium 7 (PQ-7) is a water-soluble polymer that is commonly used as a conditioning agent and film-forming agent in cosmetic formulations. It is derived from the polymerization of diallyldimethylammonium chloride, resulting in a positively charged molecule.

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