Peppermint oil is an essential oil derived from the leaves of the peppermint plant, a hybrid of watermint and spearmint. It has a strong, refreshing aroma and is commonly used in aromatherapy, personal care products, and culinary applications. The oil contains menthol, which gives it its characteristic cooling sensation. In addition to its pleasant scent, peppermint oil is known for its potential health benefits. It may help relieve headaches, improve digestion, and alleviate respiratory issues. However, it should be used with caution, as it can be potent and may cause skin irritation if applied directly without dilution.