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

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

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Anonymous 0 Comments

It’s from the manufacturing process.

Basically, during the last stage of making it, they have to do two sheets stacked on top of each other otherwise it would break. The dull side is where those two sheets are touching and the shiny side is where they aren’t touching.

There is no *meaningful* difference between each side when it comes to the way people normally use it. I’m sure if you actually got super precise and technical each side is a little different but not in any way that would affect anything a normal person would be doing. Like might hear people say you should have the shiny side up for such and such, that’s all bullocks.

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