Coffee, wine and tobacco can put a damper on your pearly whites which is why people turn to teeth whitening products. Many are not ready to give up their favorite vice but want that bright smile.
Unfortunately, teeth whitening does not work on all teeth. If your teeth are slightly yellow, bleach will help but not for teeth that are closer to brown.
If you want to whiten your teeth at home, look for kits with whitening trays for upper and lower teeth that have hydrogen peroxide. If trays are uncomfortable for you, you can use whitening strips, but be aware that the results will not be as significant.