The product called oakmoss resin or resinoid is the hot alcohol extract from the lichen, Evernia Prunastri. The product can be considered as an evaporated alcohol infusion of oakmoss. Ethyl alcohol is not exactly a selective solvent and, while the yield of extract is very high with this method, the extract contains also a great deal of chlorophyll and odorless ballast material which is not soluble even in cold alcohol. Its color is almost black green or brownish green, more brown when older, but the most important difference from the other oakmoss products is its chemical composition. Oakmoss Resin or Oakmoss Resinoid is used in perfumery where color and poor solubility present no great problem.
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