<unk>  (polyhexamethylene biguanide, PHMB) is a polymer used as a disinfectant and antiseptic. In dermatological use it is spelled<unk>  (INN) and sold under names such as Lavasept, Serasept, and Omnicide. PHMB has been shown to be effective against Pseudomonas aeruginosa, Staphylococcus aureus (also the methicillin-resistant type, MRSA), Escherichia coli, Candida albicans (yeast), Aspergillus brasiliensis (mold), vancomycin-resistant enterococci, and Klebsiella pneumoniae (carbapenem-resistant enterobacteriaceae).
Some products containing PHMB are used for inter-operative irrigation, pre- and post-surgery skin and mucous membrane disinfection, post-operative dressings, surgical and non-surgical wound dressings, surgical bath/hydrotherapy, chronic wounds like diabetic foot ulcer and burn wound management, routine antisepsis during minor incisions, catheterization, scopy, first aid, surface disinfection, and linen disinfection.
Branded as Baquacil, it also has an application as a swimming-pool and spa water sanitizer in place of chlorine- or bromine-based products.
PHMB is also used as an ingredient in some contact lens cleaning products, cosmetics, personal deodorants and some veterinary products.
The PHMB hydrochloride salt (solution) is used in the majority of formulations.
Polyhexanide
Palifermin
Dapsone 
Triclosan
Polyzene®-F
Piprozolin
Zucapsaicin
Trichlorfon