In many posts on social networks, it is claimed that the colors of the strip at the end of the toothpaste indicate its ingredients, but is it true?

According to the claims: the black color indicates that the paste contains chemicals; red color indicates that it has natural ingredients + chemicals; the blue color indicates that the ingredients are natural + medicinal; the green color indicates that the ingredients are natural.

According to Healthline, a reliable source of health information, there is no link between color and ingredients. The lines at the end of the toothpaste are simply a mark made during the manufacturing process. These signs are read by light beam sensors, which alert machines to where packaging should be cut, folded or closed.

"These signs come in many colors and are not limited to green, blue, red and black. Different colors are used in different types of packaging or with different sensors and machinery," Healthline writes.

So if you want to know what ingredients your toothpaste has, you can read the list of ingredients. According to the American Dental Association, most toothpastes contain the same basic ingredients as cleaners, flavoring agents, toothpaste softeners, foam ingredients, fluoride, and more.