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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The Great Aluminum Foil Debate: Shiny Side Up or Down?

Why aluminum foil is shiny on one side

Why Aluminum Foil Is Shiny On One Side While Dull On The Other?

FOIL SHINY SIDE UP OR DOWN - Food Lovers Recipes

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Shiny vs. Dull Side of Foil: Which Should You Use?

Why Using The Shiny Side Of Tin Foil Doesn't Actually Matter

Mistakes You Should Avoid Making With Aluminum Foil

Watch People Turn Aluminum Foil Into Shiny 'Metal' Balls

Functional Foil Made Possible by X-Ray Thickness Gauges

Does It Really Matter Which Side Of Aluminum Foil You Use?

What's The Difference Between The Shiny And Dull Side Of Aluminum Foil?