Poison Oak & Poison Ivy Cures & Causes
A powerful plant-based oil secretion called urushiol causes all rashes from poison oak, poison ivy and poison sumac. Urushiol is enormously potent! An amount the size of the head of a pin of this toxic oil is enough to cause a rash in 500 people. While poison oak rashes are rarely severe enough to be incapacitating, they are very uncomfortable and may require treatment.