How to whiten teeth-whitening teeth naturally and permanently yellow actually is very easy, you can apply these ways quickly. But before we discuss the tips or how to whiten teeth naturally, you should find out first about what the heck is a factor causes yellow teeth below.
Causes Of Yellow Teeth:
1. Lazy to scrub the tooth.
2. rub the teeth with the wrong way.
3. Too often consume coffee and tea.
4. Often smoke because the substances contained therein contained nicotine that could make the teeth becomes yellow.
5. The use of excessive eye drops.
6. Often drank the supplement or drink energy Enhancer.
7. Use teeth whitening remedy does not match.
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