Don't scratch! Learn about poison ivy from a pro, Jonathan Sachs

Poison ivy sap contains urushiol, a compound that is the active oil people are allergic to. Since the oil in poison ivy is such a highly potent substance, items that the oil come in contact with remain potentially hazardous for months. If there isn't sunlight to bleach it away or water to wash it away, Sachs hypothesized urushiol could stay contained in areas for 50 years.
(Text by Chris Brook / Boston.com Correspondent / Photo courtesy of www.poison-ivy.org)
Poison ivy sap contains urushiol, a compound that is the active oil people are allergic to. Since the oil in poison ivy is such a highly potent substance, items that the oil come in contact with remain potentially hazardous for months. If there isn't sunlight to bleach it away or water to wash it away, Sachs hypothesized urushiol could stay contained in areas for 50 years.

E-mail this article

Invalid E-mail address
Invalid E-mail address

Sending your article

Your article has been sent.

outdoors guide

Outdoor adventure guide

Go outside and do something! Find bike paths, hiking trails, and more New England adventures.