As the instructions are there on the package of the product I used it for approximate four months. No good output is here on my teeth. As tje name says the product visible white , the ability of whitening of teeth is absent im this toothpaste. The taste is good. Though the cleansing affect is average. If we judge this toothpaste by iys cost, we will surely ne disappointed. People expects much more in this price range. The oral health impact is avrage and if we talk over the overal matter it is a pure loss.