Stains teeth
After using this product for four weeks, I developed terrible brown "stains" - actually, some sort of brown deposit, on my teeth.  I tried whitening products, but nothing would take those stains off.  I was at the dentist today.  Both the dentist and the hygenist told my that Crest Pro Health caused those stains.  It took the hygenist an entire hour to get them off of my teeth.  This product should be pulled from the shelves.
Rating: 1 stars