EO-84 - Peppermint - Sold in 1x unit/s per outer -Size: 0x0 (cm) Hierbabuena oil is 60% high-grade Carvona Variety Carvone is the natural chemical that produces spearmint Its distinctive smell. The other 40% of oil is made up of other chemicals that occur naturally in the peppermint plant. Spearmint essential oil is multipurpose and continues to be used to relieve ailments such as skin problems, headaches, nausea, vomiting, respiratory problems and cold symptoms.