An ointment's a viscous semisolid preparation used topically on a variety of body surfaces. These include the skin and the mucus membranes of the eye (an eye ointment), vagina, anus, and nose. An ointment may or may not be medicated. Description The vehicle of an ointment's known as ointment base. The choice of a base depends upon the clinical indication for the ointment, and the different types of ointment bases are: Hydrocarbon bases for example hard paraffin, soft paraffin Absorption bases… (More on Ointment)