Oregano is considered by many to be "nature's cure".Our oregano oil has a high carvacol content, and is steam-distilled from the leaves of the origanum vulgare plant grown in Spain. Oregano is incredibly potent. Topically, it can cause sensitivity and should only be used in extremely low dilutions. It should also be mixed with other oils before diffusing or for topical application, or apply in max 2% dilution. Oregano Essential Oil has a powerful, spicy, camphor-like aroma.