A bae for ointments prepared by melting one-half ounce of white wax in a warm mortar and triturating with this one-half ounce of powdered gum arabic until a homogeneous paste is obtained. To this is added a boiling mixture of one-half ounce each of water and glycerin and the whole is stirred until cold. Epidermin, thus prepared, is a semi-fluid, creamy substance, which, when exposed to the air in a thin layer, forms a strongly adherent, flexible pellicle or coating. When medicaments are to be added they are always previously rubbed up in glycerin.

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Definition of  EPIDERMIN