FIELD: medicine, more particularly medical treatment and prophylaxis of diseases including venereal diseases. SUBSTANCE: antiseptic agent is solution of surfactant which includes, g: benzyl dimethyl 3- (myrostoylamino)propyl)ammonium chloride, monohydrate, 0.1; and purified water, up 1000.0. Invention makes it possible to prepare agent without side effect, which has no contraindication and has high antibacterial activity. EFFECT: improved properties of the antiseptic agent. 11 ex, 11 tbl
