This attractive diffuser is BPA-free and utilizes high-frequency ultrasonic electrical vibrations to create an ultra-fine mist. This diffusion method doesn't utilize heat, which maintains essential oil integrity and holistic properties. Now Solutions' essential oils are genuine reflections of the botanicals of which they're born. This wide array of essential oils is comprised of pure and natural extracts. The science of producing essential oils has evolved significantly over the years. These days producing essential oil that's highly concentrated, identity verified, and beneficial is a craft that involves a delicate balance of art and science that cannot be compromised. Fresh botanicals bursting with vitality, strict attention to detail, and meticulous extraction methods are what separate the elite essential oils from the run-of-the-mill natural and synthetic oils you'll find on the market today. Suggested Use Just add 150 ml (5 fl. oz.) of water and 5 drops of your favorite essential oils and enjoy. Choose your desired time 1 Hour or 2 Hour then your mode intermittent or continuous. It diffuses up to seven hours on continuous or fourteen hours on intermittent, then shuts off automatically. Keep away from children and pets.