Many people are embarrassed by the yellowish appearance of teeth. Many people are worried about how to make their teeth white and beautiful . Fortunately, there is an ingredient in your home that is very effective in whitening teeth. And the ingredient is baking soda. It works great for whitening teeth. WikiHow explains how to whiten teeth with baking soda. Take half a teaspoon of baking soda in a small cup. Add a few drops of lemon juice or water. Now make a paste with this mixture . Apply the paste with a toothbrush or finger and rub on the teeth for at least two minutes. Then cool. However, do not rub for more than two minutes. This can damage the tooth enamel. You can do this for one to two consecutive weeks. This interval should be increased after one week. Brush your teeth like this for two consecutive days. You will notice the results in a few days. Keep in mind , however, that this is not a substitute for a simple paste brush. Even if you do this, you have to brush your teeth with ordinary paste.