I've used it a few times and it does the job. It is much better compared to Colgate Optic White. Slightly minty smell and taste. Slightly grainy, not too much. The first time I used it I used an electric toothbrush which you can buy on Amazon for $5 and I had my 4 front teeth done and I can say they are noticeably whiter. I would recommend. The amount of product is surprisingly small and the color in the tiny jar is grey, which amazed me. I don't like rubbing gray or black substances on my teeth so I never try the charcoal whitening system.
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