After exposure to poison ivy oil, should I take a shower or a bath with Tecnu Original?

It is best to use Tecnu Original Outdoor Skin Cleanser in the shower. Tecnu Original bonds with the urushiol to remove it from the skin, and in the shower, the urushiol will wash down the drain with the water. In a bathtub however, the oil can disperse into the water and possibly spread to other areas of your body.