It comes in pairs designed for the upper and the lower teeth configuration and is applied in areas where the teeth are visible as the person smiles. Unlike other teeth whiteners, the whitening is only on the aesthetic area and like all whitening products; it is kept in the mouth for a period of time. Even for people who have tooth hypersensitivity and gums that could easily be irritated, the discomfort is readily remedied by gels and pastes containing fluorides or less frequent use of the whitening agents. Not everyone though is a good candidate for teeth whitening. There are teeth conditions and stains that are resistant to bleaching. You get the services of the professional that offers professional teeth whitening services. This is the most cost-effective way of managing your teeth without having to wait for weeks for results. With the services of the pros, you can automatically get your set of white teeth in hours! So what can you expect from these teeth whitening services? When used the right way and in the right amount, this can effectively remove the stains on the surface of the teeth. Majority of these stains that can be removed by the paste include stains made by drinking coffee or by smoking. The paste can be used as well in the bleaching and at the same time best used when maintaining that shiny white teeth. There are a number of professional cleaning and teeth whitening services, and it's now easy for you to change from that person with yellow teeth to that person with shiny white set of teeth. The services will vary to address different needs and preferences and the costs are minimal as well thus making these professional services easy for many people interested to improve the quality of their smile. This could be done with professional help although for the most part, a DIY - at home whitening does wonders as well. The most common methods are using bleaching pens, bleaching strips, gels and natural bleaching, most of which could be obtained from the local pharmacy and dental supply stores. There are however some risks involved when doing teeth whitening at home as some teeth could be sensitive than others and gums could also be irritated that could cause degrees of discomfort.