I'm a coffee, tea, and soda drinker -- and sometimes -- my teeth give it away. In the past, I've had my teeth professionally whitened in the dentist's office, which causes a sensitivity that is incredibly intermittently painful for me for about 24 hours after the procedure. I've also used whitening strips and trays -- but I'm just too impatient to spend a week doing daily treatments! I recently made the switch to Rembrandt Deeply White Toothpaste to brighten my smile. Here's what happened! (Sponsored)