Thyme has antibacterial and antifungal properties, Thymol, a primary constituent of thyme oil, has potent antioxidant activity and may help prevent tooth decay as a mouthwash ingredient. (It is used in many commercial mouthwashes.) Thyme essential oil is added to soaps, deodorants, and insect repellents. It is also antiseptic.
Thyme oil may help ease chest congestion, sore throat, gas, and indigestion. It is a mild diuretic and appetite stimulant.