The peppermint plant, a cross between water mint and spearmint, has a long history, first described by Carl Linnaeus in 1753. The high menthol content (such as that contained in doTERRAS peppermint essential oil) distinguishes high-quality peppermint from other products. It is often used in toothpaste and chewing gum to maintain oral health, and also helps relieve occasional stomach upset. Peppermint is still one of the best selling essential oils in doTERRAS. Primary Benefits Promotes feelings of clear airways and easy breathing when diffused. It has the effect of repelling mosquitoes and relieving itching