Birch Tar Oil is obtained by distillation of the wood from the European Birch Tree. It is extracted from the seeds, bark, flowers, and roots.The tree which grows to 15-20m is native to the northern hemisphere. The oil is dark and viscous smelling like tar, charred wood and smoke. Like the scent of a campfire. Birch tar is oil an excellent diuretic; it is used for body detoxification and cleansing. It enhances the body's blood circulation and prevents toxins from collecting in muscles.It is classed as a base note and blends well with earthy, minty and woodsy oils.