Still no magic bullet—but a range of options, old and new. produce an allergic skin reaction.
Urushiol is one of the strongest and most common plant sensitizers in the United States.
After exposure, it takes just minutes for urushiol to penetrate the outer layer of skin and bond
with cell membranes. Sixty minutes after exposure urushiol is completely bound to the skin
and can no longer be washed off with regular soap and water. 9