Shining pennies with vinegar is an easy and efficient solution to restore their shine and luster. Pennies are manufactured from copper, which tarnishes over time when uncovered to air and moisture. This tarnishing course of creates a darkish, boring layer on the floor of the penny, obscuring its authentic shine. Vinegar is a gentle acid that helps to dissolve the tarnish, revealing the brilliant copper beneath.
To shine pennies with vinegar, you have to: