For hundreds of years, Oregano has been known as one of the most potent and beneficial essential oils. Oregano can be found in cookbooks and cabinets around the world, as its versatile flavour complements a variety of cuisines. The essential oil is extracted from the fragrant leaves of the plant. A primary chemical component of Oregano is carvacol, a phenol, which makes it one of the most multifaceted and powerful essential oils in the world. In case of skin contact, Oregano should be diluted with a carrier oil.