Whether you’re into camping or not, undoubtedly you’ve run across poison ivy. The unmistakable 3 leaves and 3 red ‘berries’ in the center. But what is it that cases the reaction? Urushiol oil is the sticky resinlike substance that causes the rash. It is this same oil that is present with poison ivy, poison oak and poison sumac. Within fifteen minutes of contact, the urushiol oil will have become chemically bonded to the skin.

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