evidence: Contrary to popular belief, the colored squares or rectangles on toothpaste tubes do not indicate the ingredients or chemical composition of the toothpaste. Instead, these marks are known as "eye marks" or "color marks" used in the manufacturing and packaging process. Here's a detailed look at what they signify: [...] Several myths have circulated regarding the toothpaste color code, suggesting that different colors represent different types of ingredients or levels of chemical content (e.g., natural, medicinal, or chemical ingredients). These claims are unsubstantiated and misleading. The reality is that the color of the mark has no correlation with the toothpaste's formulation. Ingredient information is typically listed on the packaging or the tube itself, usually in the form of a comprehensive list that details active and inactive components. [...] The colored marks on toothpaste tubes, known as eye marks, are purely a technical feature to aid in the manufacturing process and have no bearing on the product's ingredients or quality. Understanding this can help dispel myths and allow consumers to make informed decisions based on actual ingredient lists and dental care needs. Next time you pick up a tube of toothpaste, you can do so with the confidence that your choice should be guided by its contents and benefits rather than the color of a small square at the end of the tube.