Essential oil diffusers are having a moment. After decades of being celebrated by nature lovers and practitioners of alternative medicine, diffusers and multi-level marketing helped push the use of the concentrated scents to the masses. Diffusers are an easy to way to dilute and disperse a preferred scent through an entire room. Most models require consumers to add water to a fill tray, drop in a few drops of essential oil and then let the diffuser do its magic. A mist is created and flows through the room for several hours or an entire day based on the model. Some brands have also explored additional therapeutic elements, such as adding calming light effects or a humidifying component. Many of the most popular models combine form and function to fit with home decor.