How to whiten your teeth?

Without going to the dentist how do you whiten your teeth? do the crest white strips actually work?
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Bicarb soda and lemon juice works - try brushing your teeth with it. Whitening toothpastes also work but don't use any other than Colgate for an extended period of time because they can sensitise your teeth (make them hurt when you eat hot and cold food). Sensodyne makes a whitening toothpaste which dooesn't hurt your teeth you could try that. Sometimes people just have naturally yellow teeth so these things won't do much as they only remove surface stains. If this is you, the only thing that will work is going to the dentist for a whitening treatment. They won't do this if you're too young though as it can highly sensitise your teeth. Cigarettes and coffee stain your teeth so stay away from both if you want pearly whites (: Good Luck!
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