Homemade recipe for teeth whitening?

Baking Soda? I heard a lot of people say that but I don't know how to use it..like put it on the teeth for 5-10 minutes OR mix it with your toothpaste. Also, what are the other safe homemade recipes for whiter teeth and how long does it take to actually show the results? thank you xx
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Mix baking soda and hydrogen peroxide in a small cup and brush on directly. Hydrogen peroxide has been used for teeth whitening by dentists for years. In typical hydrogen peroxide teeth whitening solutions, you'll find a strength of 3% to 10% with varying degrees of effectiveness. In the hydrogen perxoide you buy at Wallmart it will be a 3% solution or less. The baking soda gets rid of stains and the hydrogen peroxide bleaches. And yes, this works, but of course you won't see dramatic results very quickly. Avoid the stawberries or fruit which are highly acidic and strip the enamel. Your dentist wants to charge you $400 for 'laser' whitening, which is not laser whitening but bleaching using a hydrogen peroxide or carbamide peroxide solution which is much stronger - even as high as 30%. This bleaches more effectively and is quicker, but is often the EXACT same active ingredient. You can also buy home trays with gel and apply them yourself for around $40. This is the quickest way.You have to be persistent and the process is fiddly, but if you have patience you can achieve a great result. be aware that the stronger the bleach, the more likely you are to be sensitive to the bleaching action. It can cause pain twitches and even severe gum irritation.
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