Strawberries contain malic acid, which removes discoloration from the surfaces of your teeth.
Brush your teeth with baking soda, which acts like a natural bleach that removes surface stains from your teeth.
Oranges and other fruits containing citrus whitens teeth by wearing away tooth enamel. However, because they erode your teeth while whitening them, they might be a less-than-ideal choice.
Milk and cheeses
Milk and cheese are rich in calcium, phosphorus, and protein. These nutrients repair, re-mineralize, and strengthen your teeth and their enamel, leading to whiter teeth.
The lauric acid in coconut oil can whiten your teeth. Once in a while, dab a little coconut oil onto your toothbrush and scrub your teeth.
Apple cider vinegar
Regular brushing with apple cider vinegar removes stains from coffee and nicotine. However, you usually won't see results until 30 days of continuous brushing.
Rather than using commercial chemicals to whiten your teeth, try these natural foods first. They're safer, less expensive, and nutritious. However, you must be patient; like most natural, safe remedies, these take time to yield visible results.