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There are several evidence-based options.
### Whitening Toothpaste
Whitening toothpastes mainly remove surface stains rather than changing the natural color deep inside the tooth.
They can be useful for stains from coffee, tea, or smoking.
### Whitening Strips
Over-the-counter whitening strips typically contain peroxide and can lighten teeth gradually over several days or weeks.
Follow the directions carefully.
Using them longer or more often than recommended does not necessarily produce better results and may increase sensitivity.
### Dentist-Supervised Whitening
Professional whitening can produce stronger and more predictable results.
A dentist can also check for:
* Cavities
* Gum disease
* Cracked teeth
* Exposed roots
* Existing sensitivity
before treatment.
That matters because whitening can worsen discomfort if underlying dental problems are present.
## Why “2-Minute Whitening” Claims Are Misleading
