Peppermint oil has a wide variety of uses. It can be used as a treatment for a variety of conditions, including IBS, nausea and other digestive issues, as well as colds and headaches. It is used as a topical application for relief from itching, muscle pain, and headaches.  Peppermint is also used as a flavoring agent in foods and in products such as mouthwashes and for a fresh scent added to soaps and cosmetic products.