Toothpaste packaging marks do not indicate ingredient composition

A popular social media theory claiming that colored squares on the bottom of toothpaste tubes indicate their ingredient composition is incorrect. The theory suggests that green squares signify natural ingredients, blue indicates a mix of natural and medicinal substances, red denotes a blend of natural and chemical components, and black represents purely chemical compositions.

In reality, these marks, known in the industry as ‘eye marks’ or ‘color marks’, are used exclusively for the automated packaging process. Optical sensors on manufacturing machinery detect these marks to determine exactly where to cut, fold, or seal each tube. The specific color is chosen based on printing requirements to ensure the sensor can easily distinguish the mark from the packaging background.

These marks do not relate to product quality, safety, or ingredients. To verify what a toothpaste contains, consumers should read the official ingredient list on the back of the packaging or consult a dentist for specific dental needs.