NatraSan First Aid Spray is a revolution in healthcare. It contains pure hypochlorous acid, the body's own antiseptic. Hypochlorous is produced in all humans and animals. It is the mild but incredibly effective acidic substance released by our white blood cells to kill germs including bacteria, viruses, fungi, yeasts and moulds but it is completely safe to humans, animals and the environment. It is even safe around eyes and mouth.