The activated charcoal’s pores bind with rough parts on teeth, usually surface stains and plaque, making it easier to remove the yellowing substances. Once the charcoal has been given enough time to stick to your teeth, it can be removed and when it is, the mineral takes the plaque, food particles, and surface stains with it. This is how the activated charcoal succeeds in whitening teeth – by getting rid of surface stains in one fell swoop. However, because it latches onto grittiness found on the teeth, activated charcoal does not change the colour of teeth that are deeply stained or naturally yellowing. For this, more drastic whitening measures need to be taken such as professional bleaching.
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