Apply banana water.

The date stamp on the package is printed in the form of inkjet code and can be removed with banana water. Prepare two cotton swabs, dip them in banana water, and apply them to the area with the date on the package. Wait five minutes and wipe with a paper towel to erase the date mark. Note that banana water is poisonous and cannot be used on food packaging.

Wipe with acetone.

The date stamp on the packaging can be treated with acetone. Buy a bottle of acetone from the market, put a cotton swab in it, wait for the cotton to be moistened, take it out, wipe it on the date stamped on the package, and then wipe it off with a soft cloth. However, acetone is flammable and cannot be used in an open flame environment.

Matte paper treatment.

The stamps on the packaging cannot be removed with chemical solvents and can only be polished with sandpaper. Take a piece of sandpaper with high friction, fold it into small pieces, and keep wiping the stamp on the package to remove it, but the items with the stamp removed will appear worn.