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Truth – The colored squares on the bottom of toothpaste tubes have nothing to do with the product’s content. Actually, they are manufacturing process’ artifact, also known as color marks, printed marks or eye marks.

These artifacts are supposed to be read by light beam sensors in order to be typically identified so the high-speed machinery knows where the packaging needs to be folded or cut. All these processes work as a connected unit stream.
http://www.healthyfoodhouse.com/true-or-false-the-hidden-secret-behind-toothpaste-bottom-color/ https://www.facebook.com/SMHoaxSlayer/photos/a.147357335599672.1073741828.140690692933003/323498304652240/?type=3

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