What is the difference between the side of aluminum foil that is shiny and the side that is dull? Why are they different?

Question

Is it just because of the position when it was rolled or is there a specific use for each side?

In: 1366

Answer 1

Shiny side up looks nicer. The superstitious will place shiny side in, to bounce the heat around. Complete hogwash. As are Columbia’s foil ‘dots’ lined long underwear, which makes them colder than regular long underwear… because it’s METAL, against your SKIN. People get funny about the properties of aluminum foil.