Historically, several different types of diachylons have been described. White, or simple, diacyhlon is compounded of common oil, litharge of gold (litharge mixed with red lead), and adhesives drawn from the root of the Althaea, the seeds of flax and fenugreek. The diachylon called direatum has for its basis the common white diachylon, but with every pound of which is mixed an ounce of powder of Iris; this plaster digests, incides, and ripens with more force than the simple diachylon.
There is also the great diachylon, or diachylon magnum, composed of litharge of gold, oils of iris, chamomile, and aneth, turpentine, pine resin, yellow wax, and adhesives derived from flax, fenugreek, with new figs, raisins of Damascus, icthyocolla, juices of iris, squill, and hyssop. This diachylon was said to soften hard swellings called scirrhus, and dissipate tumors.
The diachylon gummatum is the great diachylon with the addition of gum ammoniac, galbanum, and sagapenum, dissolved with wine, and boiled to a consistency of honey. This plaster was believed the most power of all for digesting, ripening, and resolving.