Jul 3, 2021 — Colophony, also known as rosin, is the yellow, sticky sap tapped from pine & spruce tree trunks. Colophony is one of the causes of Allergic ...
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pine-sap-allergy
Jul 24, 2009 — Hi Thanks for writing to the forum! Yes allergy to Mugo pine is rare. Other possibilities are poison ivy, poison oak, or poison sumac. Common .... What is rosin and where is it found? Rosin, also known as rosin, is the sap or sticky substance that comes from pine and fir trees. Its adherence lends itself to be ... 3925e8d270