Our copper alloy was designed to minimize “Statue of Liberty” oxidation. This means that your phone won’t turn green anytime soon. However, like fine leather, it will naturally patina over time. This means that your copper case will gradually darken, particularly on the areas you touch most.


At Aeris, we tend to leave our patinas to develop naturally and give a unique look to the case, like fine leather. If you would like to reverse the patina, here is a simple tutorial on how to return your case to its original state. There are many industrial materials that can also help, but we prefer to use common household products.


What you will need:

- Your case

- A lemon / lime (juice also works)

- Salt


Step 1: Remove your device from its case.

Step 2: Place a small amount of salt directly onto the copper surface.

Step 3: Cut off a wedge of your chosen citrus.

Step 4: Scrub your case with the wedge. Attempt to cover it evenly and completely. You should start to see results within 30 seconds. Continue to scrub until you have reached the desired color.

Step 5: Thoroughly wash off the case with water, then dry.


That’s it! The copper will be just as effective as before, but now it’ll look like new.


To slow the patina process, store your phone in a cool, dry place as much as possible.