A tooth color depends on the composition and structure, the thickness of each tissue in which it is established. Yellowing of teeth can be substances that stain the enamel and plaque buildup. One of the most effective natural remedies for teeth whitening is baking soda. This solution is very cheap and thee of abrasive substances often used to whiten teeth that may affect enamel strong enough. Baking soda removes stains and imperfections of tooth enamel making teeth brighter. For this you need two small pieces of aluminum foil, 2 teaspoons of baking soda and 2 teaspoons of toothpaste. Mix good the baking soda and toothpaste, then lubricate pieces of aluminum with solution obtained. The bands should be made with natural bleach, then your teeth for 30 minutes. Once you get off, wash your teeth and enjoy the effects achieved. Do not use this medicine more than once a week. Besides this natural remedy for teeth whitening, you have to consider and other rules, if you want to have healthy teeth. You should give up black tea, coffee or red wine, because these products contain substances that stain teeth. If, however, you eat, wash your teeth every time. Particular attention should you give and your tongue. Clean it well, if you want to get rid of bacteria and have fresh breath. Raw carrots, celery APIO, apples or popcorn are foods that you clean teeth. Eat them at the end of each meal and you disposed of your teeth.