Six simple ways to whiten teeth

There are three main reasons for yellowing of teeth: first, health factors. Because of malnutrition or illness during development, tooth calcification is affected; The second is hygiene habits. Some people do not pay attention to oral hygiene, so a layer of food residues, soft dirt, tooth stones, tea stains, etc.

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Seven misunderstandings: clear black head and rebuild perfect white porcelain nose? Seven misunderstandings: clear black head and rebuild perfect white porcelain nose

Do you know what’s blocking our naked steps? The answer is the hateful blackhead. Blackheads are always stubbornly stationed on the nose, always making people feel bad. Fighting blackheads is definitely a long-term war. How can we completely eliminate blackheads? Now Xiaobian will share with you how to remove blackheads

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