Pricey, but high-quality food grade oil

doTERRA can be ordered from a wellness consultant, or you can join and order the products on your own. The peppermint essential oil is very high-quality and can be ingested (following the suggested instructions).

I love to add a drop or two to my diffuser, it gives my apartment an amazingly fresh and clean minty scent and not as much oil is needed compared to other brands.