What is oral b io radiant white black brush heads 4 pack? The oral b io radiant white black brush heads 4 pack is a set of dentist inspired round brush heads designed for thorough cleaning and gentle polishing of your teeth for a radiantly white smile from day one. These brush heads are exclusively designed for oral b io toothbrushes that utilise io technology to deliver optimal cleaning performance. What are the key features? Gentle removal of surface stains for whiter teeth starting from day one perfectly angled bristles with polishing petals for advanced cleaning io technology for oral b's best cleaning performance exclusively designed to fit oral b io toothbrushes dentist recommended for optimal cleaning efficacy usage how to use oral b io radiant white black brush heads 4 pack ensure the toothbrush is unplugged if not charging. Attach the brush head securely to the handle. Press the power button to select your preferred intensity level. Brush teeth for the recommended 2 minutes, changing zones every 30 seconds as indicated by the timer. After use, turn off the toothbrush and rinse the brush head under running water. Usage warnings precautions to consider before using oral b io radiant white black brush heads 4 pack only use with an oral b io toothbrush. Never connect the toothbrush to the adapter with wet hands. Replace brush head every 3 months as per dentist's recommendation for optimal cleaning. Keep out of reach of children. Warnings