Oregano Essential Oil, Wild (Origanum vulgare, steam-distilled from flowering tops, wild harvested), is stimulating and warming. Made from pure essential oil, oregano essential oil is highly antibacterial, antiviral and antiparasitic. Always dilute well before topical application. Use a concentration of less than 2 percent (15 drops per tablespoon of NSP massage oil) as it may cause skin irritation. Blend wild oregano essential oil with other essential oils before diffusing. Note: For external use only. Use caution if pregnant.