4. Sometimes Too White Is Too Much

Katy Perry

Dentists warn that you can actually over-bleach your teeth. If you do this, you can actually strip your enamel off and have to undergo treatments to reapply it. Over-bleaching your teeth can also cause your teeth to take on an unusual opaque color. So use your whitening products wisely and in moderation.

In sum, teeth whitening can be a great beauty trick if used in the right way. However, at the first sign of sensitive teeth or any other pain, stop and don’t continue unless you are cleared by a dentist.