My Teeth Are Yellow How To Whiten Yellowish Teeth

I have a yellowish teeth, i just noticed it lately, though i don’t smoke, or eat a lot of stained foods or drink wine and beer but still my teeth are yellow. One thing i always do is drink coffee everyday, every morning i drink nescafe coffee, but im not sure if its the one the cause my teeth color being yellowish. I brush my teeth everyday using colgate or close-up toothpaste brands but it seems my teeth still looks stained. So now i decided to really buy one of the best whitening toothpaste on the market which is colgate whitening toothpaste optic white.

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