Alongside its strengths in soothing skin diseases like eczema, birch tar essential oil also carries a number of benefits for average daily skin health. Birch tar oil is most often used in skincare products as a result of its astringent properties. This means that it is able to tighten the skin and reduce the appearance of wrinkles. The addition of a few drops of birch tar oil to a carrier oil or face cream can help the skin to appear younger and brighter. Some sources have also pointed to the impact of birch tar oil on the health and growth of hair, though research on this is still ongoing.