Foil is really flexible. You can easily wrap it around other objects which is why it’s often used for packaging. For example:

It’s used in packaging medications. Foil creates good protection from the factors that might have a bad influence on the quality and shelf life of medication. Foil protects them from humidity, germs, smells, oxygen, and light.
It’s used in the food industry. It is most often used in packaging dairy products that can be stored outside the fridge for a long time. Chocolate is also packed in foil to protect it from heat, humidity, and light.
It’s used to pack cooked food. Containers and pans made from foil are used for making pies and packing them. People use foil when they need to store food in the fridge or take it somewhere. It helps protect food from the environment and other smells.
It’s used for insulation. Due to high heat and electric conductivity, foil is used in electric cables and some types of microphones.
It’s used in art to decorate arts and crafts when an artist needs shiny metallic surfaces.

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