Web exclusive! Stadler Form's essential oils have the power to invigorate the senses, increase focus and even boost concentration. Blended in the U.S.A. from infusions of lemon, grapefruit, rosemary, eucalyptus, peppermint and lemongrass, each essential oil is hand-bottled and free of synthetic or harmful substances. Use the oils with your favorite aroma diffuser, humidifier or air cleaner, and enjoy!