Application: Polyhexamethylenebiguanide hydrochloride PHMB has been widely used in medicine for sterilization and antisepsis. As a pharmaceutical product, it is used for disinfection of contact lenses, eye drops, and surgical procedures. As the eye is more tolerant to PHMB, it can be used as an agent for treating echinococcosis keratitis, preventing and treating other eye diseases, while PHMB is also widely used in cosmetics, personal care products, textiles, food industry, etc. With the development of science and technology, polyhexamethylene biguanide hydrochloride has many new applications. For example, it is used as flocculant, as algaecide in swimming pool and industrial water treatment, as bactericide in oil injection, and can clean and remove harmful substances from glassware and other hard surfaces.