These toothpaste tube-markings are yet another online-circulated consumer tip which supposedly provides handy information when it comes to common class of product by revealing information that is available just to those “in the know” that know where to look for hidden indicators.

However, it turns out that some of these tips are irrelevant and completely wrong.
“Not many people pay attention to the color bar placed on the bottom of the toothpaste tube. After reading this article, we bet you’ll check the details which will tell you a lot about the toothpaste you are buying.
All you need to do is check the bottom of the tube where you will notice a certain colored stripe.
Toothpastes have four different stripe colors, depending on their composition. It is good for you to know the stripe’s meaning in order to know what you are buying.

In addition, here are the meanings behind every color that you may come across:
• Green color stands for a completely natural toothpaste
• Blue color means the toothpaste’s composition is natural in combination with medicines
• Red means natural plus chemicals
• Black color equals all chemicals”

Anyway, the colored squares on the bottom of toothpaste tubes have nothing to do with the product’s content. Actually, they are manufacturing process’ artifact, also known as color marks, printed marks or eye marks.
These artifacts are supposed to be read by light beam sensors in order to be typically identified so the high-speed machinery knows where the packaging needs to be folded or cut. All these processes work as a connected unit stream.

Source: snopes.com
www.yourfoodcorner.com

http://www.healthyfoodhouse.com/true-or-false-the-hidden-secret-behind-toothpaste-bottom-color/

every tube av chked in my house seems to be black..
Nigerians and Chemicals...

hummerwise:
every tube av chked in my house seems to be black..
Nigerians and Chemicals...

Read what op posted again. The colour bar has NOTHING, absolutely NOTHING to do with the composition of the toothpaste.