Mentha oil is a volatile essential oil extracted from the leaves of the mint plant Mentha arvensis. It is widely used in the food, pharmaceutical, and cosmetic industries for its refreshing aroma and cooling sensation. Here are some key facts about mentha oil. Mentha oil is a complex mixture of several chemical compounds, including menthol, menthone, and pulegone. Menthol is the main active ingredient in mentha oil and is responsible for its cooling and soothing properties. Mentha oil has several health benefits, including relieving indigestion, nausea, and headache. It also has antimicrobial properties and can help prevent the growth of bacteria and fungi. In aromatherapy, mentha oil is used to promote relaxation and reduce stress.