Before cleaning the externally exposed parts of your diffuser, always turn the power off on the product and remove plug from outlet and the diffuser. Do not clean the diffuser while it is plugged in to an electrical source.
Some essential oils such as orange or vetiver may cause discolouration to the plastic of the bowl. Note that this does not affect diffusion, but to keep your diffuser looking new, clean the bowl more frequently if you are using dark coloured oils.
If you are having problems with your diffuser, you can also see our troubleshooting page.