How Are They Made?

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Extracting essential oils from plants is done through a process called distillation.  In distillation by steam or water, many parts of the plants are used, including the plant roots, leaves, stems, flowers, or bark. Steam distillation pumps steam into a distilling pot that holds the plant material. Steam passes through the plant material and rises to the top, whereby it extracts the essential oil and carries it into the condenser. The vapor then changes to liquid water and oil, and as oil and water do not mix, the essential oil floats on top of the water.  

There is also solvent extraction, which involves mixing plant material with petroleum ether, methanol, ethanol, or hexane until the essential oils dissolve, forming a solvent-extracted essential oil. The carbon dioxide distillation process is where gas converts to a liquid state under high pressure, and then dissolves molecules from plant material. Once dissolved, the liquid carbon dioxide returns to normal pressure, changing the CO2 back to a gaseous state. The gas disperses, leaving the oil essentials behind. 

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Most importantly however, is the quality level of the plants being harvested, where they are grown, whether they are wild crafted, certified organic or pesticide free. Since the government does not regulate essential oils, many manufacturers create them with toxic chemicals and cheaper brand oils. Quality matters. The more advanced practitioners have access to high-end essential oils because they are privy to more professional connections in their industry. It is best always, to find a qualified and trusted acupuncturist, aromatherapist, or naturopath to guide you the proper organic brands.