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 ...

Procter & Gamble’s Crest has enlisted seven-year-old social media influencer Brody Hudson Schaffer as the official “Kid Correspondent” for its new Crest Kids Color Changing Toothpaste. Specifically ...

Procter & Gamble (P&G) has launched Crest Kids Color Changing Toothpaste and a line of Oral-B color-changing themed toothbrushes. The bubble gum-flavored toothpaste changes from blue to pink after two ...

Purple toothpaste isn't actually whitening your teeth — it's using color theory to cancel out the yellow. Purple sits opposite yellow on the color wheel, so Hismile's "color correcting serum" is ...

Selecting the best toothpaste goes beyond just caring for your teeth—your gums matter too. With so many options available, ...