Remove irritants from your skin that could turn into itchy  problems. Use Tecnu. Original Outdoor Skin Cleanser after you have  been outdoors to wash off the rash causing oil, called urushiol  (oo-roo-she-all), from poison ivy, oak and sumac.
Simply apply Tecnu to dry skin, rub vigorously for two minutes,  and rinse with cool water or wipe off with a cloth. When used  within 2-8 hours after exposure to poison oak, ivy or sumac, Tecnu  can remove urushiol oil before the rash begins. Once a poison plant  rash has started, washing with Tecnu helps remove any free oil on  the skin allowing the natural healing process to begin without the  possible spreading of poison ivy or oak (re-contamination).
Poison ivy and oak oil can also spread from contaminated  clothing, shoes, gloves, tools and pets. Since urushiol oil does  not evaporate, it can remain on these items for months or even  years at a time. Use Tecnu Original to wash off the oil and avoid a  poison ivy or oak rash from secondary contact.