I need help whitening my teeth?

my teeth are pretty white in the front but the canines and back are getting slightly yellow, i tried two different store bought products but still looks the same to me, any home remedies or product you recommend? much appreciated
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Canines are typically a little darker than the four front teeth. That is normal. Coffee, tea, food coloring, chewing tobacco and smoking stain teeth. If you are willing to give up those things, that will help. Getting a bleaching system from the dentist, would be the most effective way to get whiter teeth. The over the counter systems for sale in the drug store area of your store are the same thing, but at much weaker concentrations. They won't be as effective. Do not do any of the things mentioned in the first sentence while bleaching or you are waisting your time and money. Some dental clinics now offer laser bleaching. That is a pretty costly way to get whiter teeth, but it is also the fastest. It is done in one visit. However, if it is not done very carefully, it can damage your gums. One of the cheapest ways to help with staining on teeth would be to use Listerine's Whitening Pre-Brush Rinse before brushing and then brush with a whitening type tooth paste. It really helps a lot with staining on teeth. and will whiten them some. I personally have seen noticable results with this simple method. Just know that anything mentioned above may make you teeth more sensitive.
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