Diapalma

In pharmacology, diapalma (from Lat dia, "made of" + palma, "palm" ) is a desiccating or drying plaster, named for the wood of the palm tree, from which the spatula is made that is used to stir the mixture while boiling. . It was formerly composed of common oil, hogs-fat, and litharge of gold ; or also of palm oil, litharge, and zinc sulphate. Now, it is made of white wax, emplastrum simplex, and sulphate of zinc.