WebMD - Did you know peppermint is actually a cross between water mint and spearmint? The taste and smell you know from things like candies and soaps come from the concentrated oil (
Essential Oils For Diarrhea & Upset Stomach: Do They Work? - Motherhood Community
Naturalitana Peppermint Oil (4 Oz Bulk) Aromatherapy Peppermint Essential Oil for Diffuser, Topical, Soap, Candle & Bath Bomb. Great Mentha Arvensis Mint Scent for Home & Office - Walmart.com