Review (1/5): A big disappointment and waste of money
I bought this product several months ago based on its claim"whiter teeth in one week". Have used it for at least two months and notice "NO" improvement in the appearance of my teeth. A big disappointment and waste of money. I have been a "crest" customer for many years and will return to CREST when this tube is finished. It was a 5.5 ounce tube.