Toothpaste strips, what are they for and why do they never mix? Only the smartest know

Why do some toothpastes have colored stripes that don’t mix and stay separate? Here’s why.

Toothpaste strips
Some types of toothpaste are completely white, or at least monochrome. But why do many have white goo and colored stripes? And above all, why doesn’t the colored part melt? Let’s find out why.

Toothpaste and its characteristics
Nowadays, there are countless types of toothpastes on the market, even solid toothpastes as well as paste toothpastes.

Colorful stripes on toothpaste
The first traces of toothpaste date back to the first century CE , when a Roman doctor designed a paste made of vinegar, salt and honey to remove residual dirt between teeth and keep mouth and breath clean. clean. This is considered the first appearance of something reminiscent of our current toothpaste, but oral hygiene care also occurred long before this creation. Some historical sources reveal that already in ancient Egypt, in the 4th century BC. B.C., people used to take care of their oral hygiene , and they did it by mixing bay leaves with mint, salt and pepper. In short, our modern toothpaste has had many precursors, but certainly none of the methods used in antiquity saw the use of colored stripes that do not mix.

Colored stripes in toothpaste
It’s a curious question that we’ve all asked ourselves at least once in our lives. Why do some toothpastes have colored stripes that don’t mix with the white paste ?

Perhaps you have thought of marketing tricks or product identification features. In reality , these colored strips serve a specific purpose for the toothpaste itself. The peculiar thing, however, that we all noticed is that once the tube of toothpaste is squeezed, the colored stripes do not mix but remain intact, how is this possible?

How come the stripes don’t blend
The answer is quite simple, because it all depends on the structure of the toothpaste tube itself, which comes from years of laboratory studies .

There are several techniques that allow toothpaste to obtain a creamy consistency but with parts that do not mix with each other. The most modern technique involves different chemical reactions between the parts that make up the toothpaste . Using the way the dough is squeezed into the tube, these reactions ensure that the pieces don’t mix with each other. Before achieving this, however, a more basic method was used, namely the division of the toothpaste tube into several parts , inside which the paste of different colors was poured.

But how is it possible that even when you squeeze the tube of toothpaste, the paste continues to come out uniform in different colors?

How come colored toothpaste strips don’t mix
The concept is very simple. The pressure we put on the tube means that the base paste, usually white in color, compresses the colored paste, so it can come out in strips . The fact that the strips do not overlap depends on their chemical properties which prevent them from mixing and cause the toothpaste to come out evenly.

Band characteristics
So what is the function of these colored stripes and why shouldn’t they be mixed ? Basically, in most cases there is no specific reason other than aesthetic. Most of the time, colored stripes act like regular white toothpaste . In some cases, however, they may contain whitening particles or particles that help keep your breath fresher. In this case, their composition is completely different from that of white toothpaste, and they may even contain microgranules, which will help the action of the toothpaste itself.