There are various reasons to decide you whiten your teeth need a little whitening. People who drink a lot of coffee and tea, or who smoke a lot, find that they have developed stains and discoloration on their teeth.
Avoid using any whitening strips that may cause gum irritation or increased sensitivity. Look for a product that you can apply for less than an hour even if it takes you a few additional weeks to get results.
If two hour teeth whitening strips cause too much gum sensitivity, switch to half hour strips. While it may take longer for the whitening of the teeth to occur, they are not as likely to cause gum sensitivity.
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