If you pick a leaf off a tree and tear the leaf, you will see a little liquid drip out of the vein that is the essential oil of the plant, it is the Immune System of the plant. These little drops of oil have powerful healing properties and they are very compatible with the human body.
How do we obtain essential oils? Essential plant oils are extracted from trees, roots, shrubs, leaves, flowers, needles and resins. In ancient times it was very difficult to harvest plants and distill oils. In some ancient cultures essential oils were so expensive they were traded on the market like gold and silver. Thanks to modern technology these healing oils are now available to us at a fraction of the cost that ancient cultures paid.