Do not immerse handle in water as damage to the unit may occur - Brush head is not replaceable. Replace brush when bristles become splayed or every 3 months, whichever is soonest. Not intended for use by children under 6. Children to be supervised whilst brushing. THIS IS NOT A TOY. This product is not to be used by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning the product by a person responsible for their safety.