3 weeks or so: In general, poison ivy/oak/sumac is a 3 week problem. That's how long it usually takes for the reaction to subside and your skin to settle down. As a dermatologist, i will always error on the side of prolonging the treatment to at least 3 weeks to make sure there is no rebound reaction which frequently happens if the treatment is shorter than 3 weeks.
Answered 7/26/2017
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3 doctors weighed in across 2 answers
A doctor has provided 1 answer
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