"Good to know! Learn how to read the markings on all tubes so you can check what you are using before you use it."
Imagine if at a glance, you could see how natural that toothpaste you're about to use really is? According to this image and others like it, it's as simple as that. On the tops of most tubes you will find an colored square, usually of only a handful of colors: red, blue, green, and black. Are these really secret markers allowing you to tell just how natural that cream or toothpaste is?
Nope, not at all. If anyone has seen shows like "How It's Made", you probably already can guess the answer. Those "color code" makers are actually just color markers to let the sensors know where to cut and crimp the tubes in manufacturing, nothing more. In fact it's already been busted by snopes. And as they say, if you really want to know what's in the produce you're using, reading the ingredients label might be a tad more helpful.