Shining pennies with vinegar is a straightforward and efficient strategy to restore their shine and luster. Pennies are made 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 unique shine. Vinegar is a gentle acid that helps to dissolve the tarnish, revealing the intense copper beneath.
To shine pennies with vinegar, you have to: