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?
This is additional taxonomy that helps us with analytics

How to Use Aluminum Foil the Right Way

Mistakes You Should Avoid Making With Aluminum Foil

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

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

Aluminium Foil, which side up? Shiny IN or OUT? - Warren Nash

Should You Use Aluminum Foil With the Shiny Side Up or Down?

This Is Why Aluminum Foil Is Shiny On One Side And Dull On The Other - I'm A Useless Info Junkie

This Is Why Aluminum Foil Is Shiny on One Side

Aluminum Foil: Should the Shiny Side be Up or Down When Cooking?