Diffusing essential oils is a terrific way to enjoy oils in your environment without putting it on you. These are diffusers recommended by Divine Creations. We do NOT recommend oils diffused by burning as heat makes oils diffuse at different rates, changing the quality of the scent from the entirety of the blend to just single notes. The necklace diffusers are a favorite to keep your scent close to you without wearing allowing you to get continual benefit without the scent changing after mixing with your body chemistry. NOTE*** Many essential oils are toxic to dogs and cats even by diffusing. Please take caution to limit their exposure.