I have seen many different types of tooth whiteners for many years, but they often seem to be similar. This is not true with whitening products. I am recommending whitening products that are very different from the others on this page and may be even different from what is already in use. You may see an item labeled "all in one" and "single bottle" that is not actually a single bottle, but is really a bottle with several different products. These are not the same as the single bottle you can buy at a pharmacy. Whitening products are very different and will differ from product to product. Whitening products are marketed as having a brightening effect that is better than any toothpaste, gels, or other whitening products. It is not really a whitening effect if whitening products don't do the same thing as other whitening products. Whitening products work by thinning out the surface of the tooth to reduce the tooth's surface tension. Whitening can work as a whitening product if the tooth is dry and the whitening product works by being applied in a thin layer. In order to know which whitening product is best for your teeth and what kind is best, it is very important to understand the basics of whitening.