Coriander essential oil is not a very well-known oil. Related to cilantro essential oil (which comes from the leaves of the same plant), it’s steam distilled from the seeds of the plant. Its aroma is woody, spicy, and a little sweet. Many people use it for food flavoring, but the health benefits of cilantro oil are also numerous. It’s primarily used to support the digestive and hormonal systems. Aromatically, it may be act as either a stimulant for physical energy or a relaxant for bad moods.