Over Whitening Can Damage Your Teeth
All of us want beautiful white teeth. However, if you go overboard with whitening products or procedures, you'll pay for it later. Enamel cannot be replaced once it's gone so be kind to those pearly whites. Whiten teeth twice a year.
Something I like to use is a teaspoon of salt in a cup of warm water. Gargle with this mixture daily can whiten teeth considerably. Besides, it won't leave that pasty film in your mouth like those strips do. Yet it does help brighten up a smile.