Spearmint essential oil shares many of the same properties as Peppermint. Its fresh, piercing, minty-sweet aroma is milder than peppermint & better for children. Spearmint essential oil stimulates a tired mind & helps with headaches, migraines, nervous strain, fatigue & stress. The ancient Greeks used spearmint to scent their bath water. In those medieval times spearmint was also used to heal sore gums & also to whiten teeth. I wonder where Wrigley's got the idea from?