Have you ever noticed the tiny colored square at the base of your toothpaste tube? The square is usually red, black, blue, green, or yellow. It's there for a good reason, and many believe it's a secret code to tell savvy consumers about the levels of toxicity in the product.
People have said that a green square means the toothpaste is made with natural ingredients, blue is a mix of natural and medicinal ingredients, red is natural with added chemicals, and black is all chemical and synthetic.
But is this true? What is the truth behind the stripes?
Well, it turns out the little squares DO matter and they have a special purpose that has to do with the manufacturing process. They're called "eye marks" and are similar to the ones used at printers.
Each box's placement and color is detected by a machine's light beam sensors and tells it where to cut and fold the tube. As a result, each tube is prepared in record time.
So the whole idea of the colored squares telling you what's in your toothpaste is a myth! The best way to find out if your Colgate or Crest includes harmful chemicals? Read the ingredients list.