This was my first time using the charcoal powder. It is a bit scary when you open it but as you use it you can feel an immediate difference. Your teeth feel smoother. It is not a dramatic change but there is an active gradual whitening that takes place.
I bought this to replace my trays that came with my ZOOM whitening gels. These are far better than the ones you generally receive with gels, they hug the teeth for better saturation
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