I have been told that if I keep on using whitening mouthwashes excessively this may lead to a condition called ‘black hairy tongue’ (which I have looked at pictures of online – and it is NOT pretty!). Is there any truth to this?
Great question! Black hairy tongue really does exist, though it is not extremely common. It is usually due to an interruption to the natural flora in the oral cavity that allows the papilla on the tongue to grow longer, which in turn soak up stains from the food and drink which we consume. Whitening mouthwashes should not cause black hairy tongue when used as directed. Black hairy tongue is most commonly associated with persons that rinse with peroxide on a routine basis. This is not advised.
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