Cetrimonium chloride, also called cetyltrimethylammonium chloride, is a quaternary ammonium salt and cationic surfactant. It is used as a conditioning and antistatic ingredient in hair conditioners and cream rinses. Other applications include cationic detergents, disinfectants and textile printing, dyeing and finishing. It also serves as a fermentation aid. Packaging formats include 200 kg plastic drums, 1000 kg intermediate bulk containers and bulk. Cosmetic use is subject to the applicable cosmetic-ingredient conditions. Use in biocidal products depends on the applicable product authorisation.