When you squirt toothpaste how has it got neat coloured stripes on it? Surely in the tube it would all get mushed up?
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Ok, i understand that moderators will delete comments that say “Just google an image of a tube sliced apart, and it’ll immediately make sense” because it doesn’t explain in detail, but this is one of those “a picture is worth a thousand words” moments.
The tubes are packed axially along a center line, with the colors segregated in quadrants around that central axis. That way when you squeeze the tube, the paste ejects out from the centerline and the arrangement of colors in the tube is preserved. Also, see a picture and all of this will make sense.
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