Natural Thymol is found in several vegetable oils, including bee balm, some wildflowers, and its herbaceous namesake, thyme. Like many other substances of plant origin, thymol has powerful antiseptic properties. In ancient Egypt, thyme was used for embalming. The Greeks burned it as incense, and the Romans used it to clean their rooms and add it to their cheeses and liquors for its aromatic flavor. Native Americans used thyme poultices to heal skin infections and wounds.