I purchased this bright smiling tooth gadget from this portal who also gave me a manufacturer warranty of 3 months. Initially I was not very sure about the result but when I started using this product as per the mentioned instruction, I was glad to experience the result just after one use. It is a good quality product that helps in removing stain and makes tooth brighter and shiner, which a normal brush can not do. In no doubt, this product can be recommended for getting the tooth whiter at home.