Why is aluminum foil shiny on one side?

Have you ever wondered why aluminum foil is shiny on one side? Are you supposed to put the shiny side out? I’ve personally pondered this.

Reynolds Wrap is letting us in on their little secret. As it turns out, the different appearances of each side of aluminum foil are simply a result of how it’s manufactured. There’s no coating or anything, and as Reynolds Wrap points out, the performance of the foil is the same on both sides.


WHEW! Another one of life’s little mysteries solved.

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