Essential oils are often used in aromatherapy, a form of alternative medicine that employs plant extracts to support health and well-being. However, some of the health claims associated with these oils are controversial. This article explains all you need to know about essential oils and their health effects. What are essential oils? Essential oils are compounds extracted from plants. The oils capture the plantâ??s scent and flavor, or â??essence.â?? Unique aromatic compounds give each essential oil its characteristic essence. Essential oils are obtained through distillation (via steam and/or water) or mechanical methods, such as cold pressing. Once the aromatic chemicals have been extracted, they are combined with a carrier oil to create a product thatâ??s ready for use. The way the oils are made is important, as essential oils obtained through chemical processes are not considered true essential oils.