Rinse the handle and the brush head under the tap with warm water (max. 40ºC/104°F). We recommend to rinse the handle and brush head separately. Clean the back of the brush head and the connection pin of the appliance under the tap at least once a week. Dry the handle and the brush head with a towel. The adapter may not get wet. Unplug the adapter and the charger. Clean the adapter with a dry cloth. Clean the charger with a moist cloth. If you have any further questions, please contact consumer care.