Three pharmacological effects are provided:
Lidocaine hydrochloride is a local anaesthetic of the amide type which is widely used for local application to the skin and mucous membranes. It produces surface anaesthesia by diminishing or preventing the conduction of sensory nerve impulses.
Cetrimide is a quaternary ammonium antiseptic. As well as having emulsifying and detergent properties, it has antibacterial activity against gram-positive organisms and to a lesser extent against some gram-negative organisms.
Zinc sulphate has astringent and soothing properties.