Why can you swap the head on an electric toothbrush, but not a manual one?

We’ve been tossing plastic toothbrushes natures way since 1938, and plastic takes 400+ years to break down.

That means every single toothbrush ever made is still out there, adding 7 billion of them to the pile every year, slowly turning into microplastics.

Our finance guy warned us: "If it lasts a lifetime, no one will need to buy another."

"Exactly. That’s why we made it."