SEEK Organization - The 💯Tooth💯 behind the Toothpaste Color Coding Have you noticed colored rectangle marks on your toothpaste tubes? Did you know that the colors don't correspond to what type of
Is there any meaning behind the color codes of toothpaste (green, blue, red and black)? - Quora
What does the coloured square on your toothpaste tube mean?
Do Color Codes on Toothpaste Tubes Identify Their Ingredients? | Snopes.com