I notice that my toothbrush turns pink after a few days of use. What could be the reason for this?
A pink colour on a toothbrush after a few days is often due to bacteria or mould growing on the moist bristles. This can happen if the brush is kept in a damp place or not allowed to dry properly. Rinse the toothbrush well after use and store it upright in a clean, dry area. It is also a good idea to replace the toothbrush regularly to maintain oral hygiene.