8. Tea Tree Oil
Besides its antibacterial and antifungal properties, Tea tree (also sometimes called melaleuca tree) oil also has excellent anti-inflammatory properties that help relieve the symptoms of poison oak. You can safely apply a thin layer of undiluted tea tree oil directly onto the affected skin, although it may sting a bit at first. Alternatively, try diluting it one to one with filtered water. Some reports also suggest using a mixture of tea tree and lavender oils to treat poison oak. Mix equal parts of the oils and apply directly to the affected skin.