The mystery of the colored line on the toothpaste tube

You’ve probably noticed the little colored squares or stripes at the end of toothpaste tubes.

Red, blue, green, black… they have given rise to countless theories online, especially that they reveal the contents of toothpaste.

But is it really like that?

Let’s get this straight.

The viral news about toothpaste colors

Numerous articles and social media posts suggest that the colored stripe indicates the type of ingredients contained in the toothpaste:

Green  = natural

Blue  = natural + medicinal

Red  = natural + chemical

Black  = all chemicals

It seems useful, but there is a big problem.

The reality: it’s a trademark

Those colorful brands are not intended for consumers at all.

They’re called “reference marks” or “registration marks” and are used during the manufacturing process. Machines read these marks to determine where to cut, fold, or seal the package.

In other words:

 

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