These constituents’ names have “-ol” or “-ole” suffixes. Phenols are found naturally in fruits, vegetables, nuts, and most other foods. They can be used to create cosmetics and hygiene-related products and are responsible for the fragrance of an oil, being less volatile than Terpenes. The most common essential oil Phenols are Antheole, Carvacrol, Eugenol, and Thymol.