Teeth Whitening kits come for use at home, as over-the-counter kits that bleach teeth. There are a couple of genders. First, there are the type that include dental trays. With this type, there are clear soft plastic trays to be cooked so that they can be printed in the shape of your teeth. Once these are finished, are worn with a bleaching gel, usually a low concentration of peroxide, within them. They are usually wearing a couple of times a day for several days. At home another method Teeth Whitening kits is a type that uses Whitening strips. The kit will thin strips sealed individually, some who are identified for the upper teeth, and other specially for the lower teeth. Each package has a strip that has a relatively low concentration of oxidizing agent, usually a form of peroxide. The strips can be worn a couple of times a day, and are more convenient than any other method, how can continue their normal routine, and take the strips out of their mouth after the necessary 20-30 minutes are up. Some brands even boast that no one will know you are wearing them. These are worn for several days, often 7-10. For some people, have white teeth in a few days, others are not so lucky. All in all, the teeth white kit available in your local store is likely that there teeth white, although usually not as white through his dentist.