New Delhi: Remember the recent advertisement by a leading toothpaste company in which a woman is seen complaining about her yellow teeth and whishhhh!From inside the mirror Bollywood actress Kareena Kapoor enters asking 'Kya aapke
- Quit smoking: Lifestyle choices can also influence a natural white smile with smoking being one of the biggest causes of teeth decay and discolouration. The nicotine and tar in the cigarette result in teeth darkening, losing their natural white.