Hydrogen peroxide is the star of the show in this whitening kit, which includes pre-filled treatment trays made for easy-peasy brightening. This kit rarely goes on sale — in fact, our price trackers ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." You know what nightmares are made of—someone telling you you have to choose between your morning coffee ...

But dentist Dr. Brady Smith (@drbradysmith) says that whitening toothpaste doesn’t whiten teeth and is all a “scam.” “I don’t know if it’s the biggest scam in dentistry. It’s definitely my favorite ...