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Real tooth whitening is usually not instantaneous.
A homemade mixture may temporarily remove:
* Plaque
* Food residue
* Surface stains
which can make teeth appear cleaner.
But changing the actual color of teeth generally takes repeated exposure to a whitening agent over time.
Dramatic before-and-after images online may also involve:
* Different lighting
* Photo editing
* Professional dental work
* Veneers
* Cleaning rather than whitening
So be cautious with claims promising a completely white smile after one brushing.
## What About Salt?
Salt is another common DIY ingredient.
While salt can have cleaning uses, rubbing coarse salt directly on teeth can be too abrasive.
Abrasive powders may scratch enamel and irritate gums.
There is no need to scrub your teeth with salt to keep them clean.
## What About Charcoal?
Activated charcoal toothpaste has become popular, but evidence for meaningful whitening is limited.
Some charcoal products can also be highly abrasive.
If a product is too abrasive, repeated use may wear enamel rather than improve tooth health.
## The Best Daily Routine for Whiter-Looking Teeth
The most effective long-term routine is surprisingly simple:
