
This is great before the special occasion. Strawberries can lighten teeth and remove discoloration, because the maltic acid has astringent properties. Combined with baking soda, strawberries become an effective natural teeth-cleanser. While it’s no replacement for a bleaching treatment at your dentist’s office, your teeth will definitely look brighter and shinier.
1 ripe strawberry
1/2 teaspoon baking soda
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. Do not leave longer than 5 minutes, because of the high acid content in strawberries excessive exposure can permanently damage the enamel on your teeth. Then brush thoroughly to remove the mixture. Rinse with plenty of water. Smile!
Source: Fairley, J. (2006). The ultimate natural beauty book.

