What are small square boxes on toothpaste package?

        

          The small symbol, on the sealed end of the tube, comes in green, blue, red or black. Which one we select and use for our health? Many explanations on going on about these square boxes on tooth paste. Actually....

    Which one we select and use for our health? Many explanations on going on about these square boxes on tooth paste. Actually we cant tell what those boxes. I searched many sites for the info.

 

First:

                   Mainly some sites are telling that, those boxes will let u know about the product ingredients used in manufacture. see below colour wise product

Green  :  Natural;
Blue    :  Natural + Medicine;
Red     :  Natural + Chemical composition;
Black  :  Pure chemical.

Second:

               Some sites are telling the colored squares on the tubes have no relationship with the content of the toothpaste. They are just ‘color marks’ or ‘eye marks’, which are for the manufacturing process. These marks show whether the packet can be either folded or cut as interlocking units stream through machinery at a high speed through seen using light beam sensors.

That's it. So friends which one you will believe decide your self.

Thank you