What does the colors on the tubes of toothpaste mean? | March 22, 2025

You may have already noticed these small colored squares at the bottom of the toothpaste tubes and heard that they reveal the composition of the product. There are rumours that these colours indicate whether toothpaste contains natural ingredients or chemicals. But what is the real situation? Let us decipher this received idea together and discover the true function of these marks.

The myth of revealing colors
Much relayed information on social networks claims that the colour of the marking at the bottom of the toothpaste tubes would indicate the nature of the ingredients:

Green – 100% natural
Blue – mixture of natural and medicinal products
Red – combination of natural and chemical components
Black – all-chemical
Although this explanation may seem credible at first glance, it is totally false. It is a modern myth that has been circulating for years, sowing in health-conscious consumers.

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