Aqueous wound and mucous membrane disinfectant containing a) octenidine dihydrochloride, and b) one or more active ingredients selected from the group ethanol, 1-propanol, 2-propanol, undecylene amidopropyl trimonium methosulfate, 3-(4-chlorophenoxy)-1,2-propanediol and/or sodium hydroxymethylglycinate and c) glycerin and/or 1,2-diols having 3 to 10 carbon atoms, and d) optionally surfactants, emulsifiers, solubilisers, pH regulators, dyestuffs, perfumes and/or thickeners, the agent being free of phenoxyethanol, phenoxypropanol, phenoxyisopropanol and organic acids.