Polyhexamethylene biguanide (PHMB) is an antiseptic with antiviral and antibacterial properties used in several ways including wound care dressings, contact lens cleaning solutions, perioperative cleansing products, and swimming pool cleaners.
A
hydrochloride salt of polyhexamethylene biguanide. It is a broad
spectrum and fast acting bactericide which is used for the formulation
of disinfectants and sanitisers.
PHMB (polyaminopropyl biguanide) proved toxic to keratocytes and was shown to have acute toxic effects in human cells where it caused severe inflammation, atherogenesis, and aging.
Polyaminopropyl Biguanide (PHMB) is not safe for consumers when used as a preservative in all cosmetic products up to the maximum concentration of 0.3%. The safe use could be based on a lower use concentration and/or restrictions with regard to cosmetic products' categories.
