Tea, coffee, tobacco and age all gradually darken teeth. The internet is full of home remedies promising a brighter smile — but some of them do more harm than good.
Myths
- Lemon juice or vinegar: they're acidic and erode enamel, which can make teeth look more yellow over time
- Charcoal powder: it's abrasive and can wear enamel without changing the tooth's natural colour
- Scrubbing harder: this removes enamel, not stains, and causes sensitivity
What actually works
- Professional scaling and polishing removes surface stains and tartar
- Dentist-supervised whitening safely lightens the natural tooth shade
- Veneers or crowns can cover deep stains that whitening can't shift
Whitening only works on natural teeth — not on crowns, fillings or veneers. A check-up first makes sure there are no cavities or gum problems that whitening would irritate.
This article is general information, not a diagnosis. Please visit a dentist for advice about your own teeth.