Quaternary ammonium cationic group

Structure–Performance Relationship of Polyquaterniums in Hair and Personal Care Formulations: Smoothing Conditioning, Antistatic Performance, Film Formation, and Deposition Behavior

Polyquaterniums are commonly listed in cosmetic ingredient declarations in the form of “Polyquaternium-number,” such as Polyquaternium-7, Polyquaternium-10, Polyquaternium-22, Polyquaternium-37, and Polyquaternium-55. In the industry, PQ is often used as the abbreviation for Polyquaternium.