Very effective: For medical grade whitening gel, it is very effective. The concentration of the whitening gel offered by a dentist is much higher than the concentration sold in a pharmacy.
Answered 10/3/2016
5.5k views
Depends: Depends on your age and the type of staining trying to be removed, but it does work.
Answered 12/7/2012
5.4k views
Very: Tooth whitening gel when used with properly made bleaching trays are very safe and effective.
Answered 7/6/2013
5.2k views
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