Essential oils have been used for healing for 1000s of years. The first known documentation of plant use for medicine is in the cave drawings in Lascaux, France which date back to 18,000 BC ! Since that time there is documentation of societies across the world utilizing aromatic oils for health and healing.
We know that around 4500 BC Egyptian priests were widely using aromatic oils in healing, as perfumes, and in the mummification process. The Chinese are documented as having used essential oils as far back as 2600 BC. Other civilizations are also known for their use of essential oils including India, Greece, as well as the Roman and Arabian Empires.
To most westerners the Bible story of the three wise men bringing gifts to the baby Jesus, including Frankincense and Myrrh, is well known.