| Section2 = }} Thymol is a monoterpene phenol derivative of cymene, C10H14OH, isomeric with carvacrol, found in oil of thyme, and extracted as a white crystalline substance of a pleasant aromatic odor and strong antiseptic properties. It is also called "hydroxy cymene". Use The Bee Balms (Monarda fistulosa and Monarda didyma) are natural sources of thymol, a primary active ingredient in modern commercial mouthwash formulas. The Blackfeet Indians recognized this plant's strong antiseptic action… (More on Thymol)