Review (4/5): Yes - this powder whitens....but
This product actually does whiten teeth. If it doesn't - you haven't been to a dentist in a while! I see a few people complain that it doesn't work, but you have to consider....It took quite a while for your teeth to get discolored - months, or even years. You can't expect anything ( even dentist whitening) to whiten your teeth over night. A dentist whitening has you come back several times - depending on how white you want. It will take weeks, even months using this to get your teeth close to white, but if you use this every day - you will see a difference. One more thing - instructions tell you to wet the tooth brush and dab it in the powder. What they do not instruct is if the powder in the container gets wet - mold will begin to grow on it. This happened with my first order. Now, I put a small amount of powder on the outside top of the lid, dab with a wet brush, then throw the small amount left away. You can gauge the amount of powder needed for one use, so you don't waste too much.