Why is only 1 side of aluminum foil shiny?

Is there a purpose behind the two different textures? Should we be using different sides for certain reasons?
Is there a purpose behind the two different textures? Should we be using different sides for certain reasons?
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9 Amazing Hacks for Aluminum Foil

Why is only 1 side of aluminum foil shiny?

My aluminum foil shows which side is the nonstick side. : r/mildlyinteresting

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Why Aluminum Foil Is Shiny on One Side

Why Does Foil Have a Shiny Side and a Dull Side?

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Why Aluminum Foil Has a Shiny and a Dull Side

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The Reason Aluminum Foil Has Both A Shiny And Dull Side