How long does tooth whitening powder take to whiten teeth?

asked:


i just got this pack of tooth whitening powder..
The brand is Eucryl (USA) and it says to use it only 1-2 times a week.
So how long would it usually take to get rid of stains (mainly smoking) and whiten teeth?

How long does tooth whitening powder take to whiten teeth?

asked:


How long does tooth whitening powder take to whiten teeth?

Teeth Whitening

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