What Do the Colored Squares on Toothpaste Mean?

Many people believe the color blocks denote the kinds of ingredients in each tube of toothpaste. It's said that green marks mean only natural ingredients were used while blue means a mix of natural ingredients and medication. It's also said that red marks mean a combination of natural ingredients and chemical ingredients while black means only chemical ingredients were used. This information isn't true at all.

Here's the Actual Explanation

The truth isn't all that flashy, but it's still interesting information to know. (You know, in case you're ever on, Jeopardy.)

According to Colgate, "They [the squares] actually help in the manufacturing of the toothpaste tubes by telling light sensors where the end of the tube is so that it can be cut and sealed properly."

It's not as exciting as a secret code, but the truth is good to know.