For the formulation that are used by the professionals that conduct supervised teeth whitening procedures, the formulation for the peroxide may reach up to 43 percent and the strength of the bleaching agent will depend on the service provider. This is the reason why those wanting immediate effects will go for the supervised services of the dentist. In-office tooth bleaching is also the safest. Unlike tooth whitening done at home, in-office whitening is conducted and monitored by a professional practitioner. Risks therefore, no matter how low and the aftereffects no matter how mild is attended too eliminating discomfort. Not everyone is a good candidate for in-office teeth whitening. 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. Professional Laser Teeth Whitening Services Dissected Having yellow teeth is no longer a problem, well at least according to many dental practitioners. 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. And also do remember that if you are not helping yourself (think: smoking) then there is a big chance that the results will be delayed and may be minimal. Do take note that the bleaching action can be faster if you will also do your part in the teeth whitening process. It doesn't mean that if you fall in one of these situations, then you can no longer try teeth whitening. There will be times when the retractors will be used as well, and this is important so that your lips and tongue will not get in contact with the whitening agents incorporated in the solution. Next up is the addition of the barrier on the gum line. This is done so that the whitening solution will not get in contact with the gum area.