| Much like other teeth bleaching products teeth | | | | bleach your teeth so they may not work as quickly |
| whitening pens are only effective if they person | | | | or as effectively. There is also the usual danger that |
| using them sticks to the directions for use and | | | | comes with using any of these products. While they |
| doesn't give up early on in the process. The teeth | | | | have all been tested to be relatively safe to use at |
| whitening pen can only whiten the teeth if they are | | | | home, there is a danger that overuse could weaken |
| used for an extended period of time and this is | | | | the enamel on your teeth. If sensitivity occurs after |
| where most people go wrong. | | | | use of these pens you should discontinue their usage |
| People who buy these bleaching products expect the | | | | immediately and contact your dentist. |
| results to be instantaneous and when they are not, | | | | Most pens will last the user about 30 days, and their |
| some people tend to give up and call it a failure. As | | | | prices generally vary depending on whether you go |
| with any whitening agent, there are pros and cons to | | | | with the name brand, or with a lesser known |
| using the pen as opposed to the apparent myriad of | | | | company. The ingredients in these tend to be very |
| other products. The pens might be less messy than | | | | similar if not exactly the same, so saving a dollar or |
| the trays appear to be, but also have less of a | | | | two is recommended whenever possible. |
| concentration of the active ingredients that actually | | | | |