Copper is an elegant, durable material with a long lifespan, but over time it can darken or tarnish due to oxidation. If you have copper objects in your home or business—such as utensils, faucets, ornaments, or pipes—it's essential to know how to clean them properly to preserve their beauty and functionality.

In this guide, we explain how to clean copper safely and effectively , using both homemade and professional cleaning products.

Why does copper get dirty?

Copper oxidizes when it comes into contact with oxygen and moisture in the air. This forms a greenish or brownish layer called patina , which in some cases is desirable for its vintage appearance, but in others it can be undesirable, especially on kitchen utensils or visible surfaces.

In addition to oxidation, copper can also become dirty from grease, dust, food residue, or inappropriate cleaning products.

How often should copper be cleaned?

It depends on the use and the environment. For example:

• In kitchens, it is advisable to clean copper utensils after each use.
  

• For decorative objects, a monthly cleaning or whenever they look dull is sufficient.
  

• In installations (such as pipes or faucets), preventive cleaning is recommended from time to time, especially if there is a buildup of limescale or residue.

Copper cleaning according to each case

How to clean copper with professional products

If you prefer a faster and more effective option, especially for businesses, we recommend using specific metal cleaning products . At La Corberana, we have degreasers and multipurpose cleaners that can help you clean copper surfaces in commercial kitchens, faucets, and plumbing systems.

Advantages:

• They do not require prior preparation.

• They have descaling action.

• Some protect against reoxidation.

• They save time and effort.

How to clean a copper sink?

To keep your copper sink clean and shiny, there's no need to complicate things. With a few drops of dish soap and a soft sponge or cloth, you can remove everyday dirt without damaging the surface. Just rub gently until it lathers, rinse with warm water, and dry thoroughly with a towel.

How to Clean Copper When It Turns Black: Homemade Cleaning

1. Vinegar, salt and flour (traditional method)

Ideal for: pots, ornaments and other small objects.

Ingredients:

• 1 tablespoon of salt
  

• 1 cup of white vinegar
  

• Flour (as needed)
  
  

Instructions:

1. Mix the vinegar with the salt and add flour until a thick paste forms.
   

2. Apply to the copper surface and let it sit for 15 minutes.
   

3. Rub with a soft cloth or sponge.
   

4. Rinse with warm water and dry well.
   
   

2. Lemon and salt

Ideal for: flat pieces, coins, trays.

1. Cut a lemon in half.
   

2. Sprinkle salt over the lemon.
   

3. Rub it directly onto the copper.
   

4. Rinse with water and dry with a clean cloth.
   
   

3. Baking soda and vinegar

Ideal for: cleaning heavily oxidized or stubbornly stained copper.

1. Mix a tablespoon of baking soda with vinegar until it foams.
   

2. Apply with a soft sponge.
   

3. Let it sit for a few minutes.
   

4. Rinse and dry.

How to clean copper when it turns green?

Over time, copper tends to lose its natural shine and acquire a greenish or even blackish hue. This layer, known as patina , is the result of oxidation caused by contact with air, moisture, or certain products. Although in some cases this aged effect is sought, it often gives a neglected appearance.

If you want to restore your copper's original appearance, there are home remedies that can help you easily and effectively. Here we share two very useful methods:

1. Clean the copper with ketchup or tomato sauce

Although it may not seem like it, the acid present in tomatoes helps eliminate rust. It's a perfect option for small objects or smooth surfaces.

How to do it:

1. Apply a layer of ketchup or tomato sauce over the entire surface of the copper.

2. Rub with a soft sponge or cloth using circular movements.

3. Let it sit for 5 to 10 minutes if the oxidation is intense.

4. Rinse with warm water and wash with a little soap.

5. Dry thoroughly to prevent re-staining.

2. Diluted ammonia for stubborn greenish stains

Ammonia is a powerful deoxidizer that, when used correctly, can be very effective on severely damaged copper pieces.

Steps to follow:

1. Prepare a mixture of equal parts water and ammonia.

2. Place the copper piece in a sturdy container and cover it with this solution.

3. Let it rest for a few hours (maximum 2–3 hours).

4. Remove the object, rinse well with water and dry it completely.

5. If any residue remains, you can repeat the process, but it is not advisable to overuse ammonia, as it is a strong product.

Conclusion

Keeping copper clean is easier than it seems. Whether with home remedies or specialized products, with regular cleaning you can preserve the shine and natural beauty of this versatile material.

At La Corberana , we offer effective cleaning products for all types of surfaces , including metals. If you have any questions about which product to use, we'd be happy to help.