How to deal with metal glasses frames turning green?

1. If the metal glasses frame turns green, you can take it to the store for cleaning. After-sales service is generally free. It is recommended to clean it regularly and pay attention to the maintenance of the glasses.
2. Dip a cotton swab into an appropriate amount of white vinegar, and gently wipe the patina in all directions. It is usually easy to wipe off. If it does not fall off, just wipe it a few more times. After wiping it clean, rinse the frame again with clean water.
3. You can prepare an ultrasonic cleaning machine at home, which will make cleaning glasses more convenient.