14-pack includes 10mL Eucalyptus, Lavender, Lemon grass, Orange, Peppermint, Tea tree, Bergamot, Cinnamon leaf, Clary sage, Grapefruit, Lime, Patchouli, Rosemary, Spearmint. 100% Pure Therapeutic Essential Oils, no fillers, additives, bases or carriers added. Can be used with compatible aroma diffusers or many humidifiers, by adding a few drops of oil combined with water the diffusers and humidifiers will release a scented vapor into the atmosphere. .