Read on for the method, as well as the science behind it.
Apparently the malic acid in strawberries is an astringent which removes surface discoloration on teeth. A simple tooth-cleaner can be made by mixing strawberry pulp with baking soda and brushing it on with a toothbrush.
Health.com gives this method:
Crush the strawberry to a pulp, then mix with the baking soda until blended. Use a soft toothbrush to spread the mixture onto your teeth. Leave on for 5 minutes, then brush thoroughly with toothpaste to remove the berry–baking soda mix. Rinse.
Don't do this more than once a week though, as the acid can damage tooth enamel if applied too frequently.
We have no idea whether or not this method is effective, but spreading strawberry paste over your teeth sounds much more pleasant than any commercial tooth-whitening process.
• Read more: How to Whiten Your Teeth Naturally - Health.com
Have you ever heard of whitening your teeth with strawberries?