This is one homemade recipe for teeth whitening. This method is really helpful. Note: The whitening does not act equally on every teeth. For example if you have grayish teeth the whitening can be invisible and in case of yellow teeth the whitening will.
Blue, violet and indigo foods have tons of antioxidants, Some blue and purple fruits and vegetables are also really high in vitamin C. Anything in this category will help improve circulation and prevent blood clots, so they are great for the heart and can