However, it takes forever to do this effectively. Dip a swab into the alcohol, soak up some urushiol from your skin, and discard the swab immediately. After you've done this 30 times, you can briefly rub the infected area with the alcohol-soaked swabs. After about 80 swabs, rub the area vigorously with the alcohol-soaked swabs in order to open the pores and retrieve any urushiol that's entered them. This will also help sterilize the skin.
Barrier creams are another common preventative.
Most use clay-based ingredients to keep urushiol from contacting the skin altogether. It goes without saying that this material must be applied to every bit of exposed skin to be completely effective. It should also be washed off within 4-6 hours in order to keep the skin safe. One brand, the Stockhausen Corporation's Stokogard Outdoor Cream, seems to provide the best protection. Attempts have also been made to produce a medication that, when taken in advance, can desensitize one to urushiol.