Comments
"Hyposensitization with the currently available commercially prepared extracts of poison ivy/oak have not been proved effective scientifically and are not generally recommended." Also in the Anacardiceae family: poison sumac, mango, cashew, ginkgo, Japanese lacquer tree, and Indian marking nut. Useful barrier creams include: Hydropel, Hollister Moisture Barrier, and Stokogard Outdoor Cream. [Marks, p. 254-7]