Airome Passive Porcelain Essential Oil Diffusers can be filled with 100% pure essential oils, fragrance oil, or water and oil to diffuse fragrance that lasts for up to 2 weeks. A porcelain botanical rests on a ceramic base to bring natural beauty to your space as you enjoy the aromatherapy benefits of 100% pure essential oils. Once your oil is completely diffused, simply let flower dry out before switching fragrances or diffuse only water to clean out between fragrances. Includes a 10 mL bottle of pure peppermint essential oil, but can be used with any essential or fragrance oil.