Cornmint essential oil is steam distilled from a plant that grows in Asia as well as South America. Due to its strong, fresh, pepperminty scent, it is commonly used to fragrance soaps, toothpastes, detergents, cosmetics and perfumes. It is used to treat colds, bronchitis and other respiratory ailments. It may also be helpful for rheumatism and neuralgia. In Chinese Medicine, it is used for earaches, tumors and skin conditions.