Baking soda is excellent for making your pearly whites shine. It works as a mild abrasive to remove yellow stains from your teeth. In addition, it helps remove plaque by neutralizing acids produced by the bacteria. You can simply put a little baking soda on your toothbrush along with your regular toothpaste. Brush your teeth as usual for 2 minutes. Do it once daily for a few days. Alternatively, prepare a homemade teeth whitener with 4 tablespoons of turmeric root powder, 2 teaspoons of baking soda and 3 tablespoons of extra-virgin coconut oil. Mix all the ingredients thoroughly. Use a small amount of this paste to brush your teeth once daily for a few days. Note: Avoid excess use of baking soda as it can strip your teeth of its natural, protective enamel.