but aluminum foil has another surprising use: protecting banknotes. The idea is simple. Aluminum is an opaque material that forms a physical barrier against light and certain external influences. It acts as a kind of lightweight shield around your money.
This technique is particularly useful for those who want to store banknotes for a long time.without them gradually deteriorating. It is affordable, fast, and requires no special equipment.
But beware, and this is an important point: aluminum foil does not seal airtight. It does not protect against ambient moisture.