No, there is no evidence to support that coconut oil can whiten teeth. Still, it can make them appear brighter after application, albeit temporarily. And swishing coconut oil in your mouth (a.k.a. oil ...

We asked dentists about the most effective ways to whiten teeth at home, and they shared their top picks for toothpastes, mouthwashes, pens, strips and kits.

Did you know that ancient Romans used urine as a teeth whitener? (Gross, but true. ) Or that in 16th-century England, soot ...