Oral B iO Gentle Care, 4 pc, Replacement brush heads unisex, The Oral B iO Gentle Care replacement toothbrush heads help you to get the best results from your oral hygiene. Changing the heads regularly guarantees you are always cleaning your teeth as effectively as with a new brush. Characteristics: removes plaque cleans teeth even in hard-to-reach places also suitable for people with sensitive teeth and gums provides gentle care for your gums and tooth enamel cleans interdental spaces far better than a manual toothbrush does for professional brushing of teeth How to use: Attach the replacement head to the appropriate brush and click into place. Replace the brush head regularly, ideally every 3 months.