"Hydroxyapatite is natural. It is a type of calcium that makes up bones and teeth," says Lai. "Nano-hydroxyapatite relates to ...

A photo of a long‑expired tube of toothpaste—dating all the way back to 1988—has gone viral on Reddit, attracting more than ...

Toothpaste is a daily staple in more than 300 million Americans’ oral hygiene routines, and more people are looking for sustainable oral care products that are made with safe ingredients and reusable ...

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 ...

Toothpaste isn’t just for your chompers anymore. As it turns out, this medicine cabinet staple is good for much more than preventing cavities, freshening breath, and shining up those pearly whites.

Instead of the white foam most of us normally produce when brushing our teeth, activated charcoal toothpastes coat teeth (temporarily) in a dusky slurry. Yet despite their dark hues, many companies ...