Coffee drinkers insist Amazon's bestselling £17 teeth whitening solution designed to 'erase stains' gives 'better results' than a trip to the dentist
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"Just can’t believe how well on my stained 66 year old teeth. I didn’t want to smile at all because of staining from smoking and tea drinking. No cleaning at dentist for a few years has not helped. Within the first few days of using the powder the staining was going.

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