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“Paper” cash is actually linen. You can wash it with hot water no problem

Everyone knows money laundering is against the law.

In Canada, cash is all plastic. Not quite the plastic OP was thinking about. Love me my plastic colorful money.

"Paper" money is actually a cloth composite, which can be washed.

It can also be ironed. If you have a bunch of crumpled bills and you wish they took up less space and were easier to handle, iron them.

I was looking if someone had posted this video :)