Add Yahoo as a preferred source to see more of our stories on Google. How does purple toothpaste work? It uses color theory’s principle of complementary colors. Complementary colors are shades that ...

"My teeth are much whiter after only a few uses! I'm delighted." ...

Thanks for your great questions, Amelia. I’m a dentist, so I know a bit about how toothpaste works and what we used before it was invented. Toothpaste makes your mouth smell fresh and feel clean. If ...

While each product featured is independently selected by our editors, we may include paid promotion. If you buy something through our links, we may earn commission. Read more about our Product Review ...

I had no idea my toothpaste could solve so many household problems. Once you see this list, you'll never look at it the same!

Here's a fun fact: Toothpaste works to clean your teeth through the use of slightly abrasive substances, among other things like fluoride. Those little abrasive chemicals work to dislodge gross stuff ...