A Toothpaste Tube’s Colored Squares

The toothpaste tube’s colored squares at the bottom aren’t there because they look pretty. They’re eye marks that tell assembly line machines where to cut and where to fold the packaging. Otherwise, toothpaste tubes would come out stuck to one another.

Did you know that a bunch of people actually believed the color of the dot was meant to indicate the level of toxicity in your favorite tube

Supposedly…
Green: all-natural.
Blue: natural plus medicine.
Red: natural and chemical.
Black: pure chemical.
Turns out this was completely bogus, so feel free to brush away.