How To Darken My Copper Sink?

Beginner Info, Kitchen, Sink

How To Darken My Copper Sink
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Well, in this post, I would be walking you through various ways of darkening a copper sink.

In fact, even though you’re planning to expedite the process for the first time, you can easily expedite it on your own with the necessity of taking help from an expert.

I’m assuming that most of you would be aware of the fact that the natural color of copper is a warm reddish-brown tone that comes from the mixture with alloys such as bronze and brass.

However, your copper sink may lose its color and shine as time progresses mainly due to improper handling and rough uses.

So, if you’re struggling to get your copper sink back to its original color then you can go through this step-by-step guide that instructs you on how to darken copper sink quickly and naturally.

Copper is an important metal that has got a wide range of applications including electricity, plumbing, pharmaceutical, and construction.

In order to maintain copper sink in its natural shape, size, and appearance, you must expedite the cleaning & maintenance process on a regular basis without fail.

If you’re planning to own a copper sink then I would request you to gather as much information as you can about its color-changing process to be comfortable with the sink.

It goes without saying that the copper kitchen sinks are durable and would last for decades.

So, without any further ado, let’s begin…

Is It Possible To Darken Copper Sink Naturally?

Yes, you can easily darken your copper sink naturally by simply following the steps that we would be discussing in a while.

And, the best part is, darkening copper sink naturally doesn’t have any side effects, the process is completely safe & non-toxic.

Copper undergoes an oxidation process by reacting with the elements present in the atmosphere and as a result, it changes color over time.

Moreover, the distinct shades that a copper sink takes over a period of time are popularly known as PATINA.

If you’re well-informed about the formation of patina on the copper surface then it would be easy for you to understand the idiosyncratic ways that you can create different finishes naturally and easily.

How To Darken A Copper Sink Naturally?

Let’s have a quick look at each of the below-mentioned steps, we’ve been recommending the same to our clientele and so far the feedback that we’ve received are positive and encouraging.

Cleaning the Copper

First and foremost, you need to clean your copper sink in such a way that it is FREE from specks of dirt, food particles, debris, and oil.

If needed use mild soap solution and a sponge or a soft cloth to scrub the dirt.

However, before expediting the cleaning process make sure you’ve covered your hands with gloves especially if you’re taking help of chemical cleaner for cleaning your copper sink in order to prevent any damage to the sink.

Rinse, Sprinkle, And Scrub

Once you’re done with washing your copper sink with soap solution, the next thing that you need to do is to take baking soda and sprinkle it all over the surface.

Allow it some time to settle and then with the help of steel wool gently scrub the surface of the sink.

What actually it will do is remove all the excessive particles and even coating that could be a hurdle in the way forward.

Make sure you’re scrubbing the copper surface in the best possible way, as it will expose the layer of copper to the oxidizing agent that will darken it.

Now, it’s time to wash away the baking soda that you’ve sprinkled over your sink surface sometime before.

If needed, wear a pair of gloves and scrub the areas where you still find the presence of baking soda particles.

Apply Solution And Dry

Prepare a solution that consists of water, salt, and most importantly, vinegar.

Mix vinegar and water in 1:1 ratio and add a pinch of salt.

Apply the solution on your copper sink and allow it to settle at least for 30 minutes.

When your copper sink stops soaking the solution, allow it to air dry till the time solution is fully absorbed.

If you’re wiping it clean then you might not achieve the desired result.

Furthermore, if you want to speed up the oxidation process then in that case, you need to sprinkle salt all over.

Can I Darken Copper Sink With Liver Of Sulfur?

Yes, you can easily darken copper sink with liver of sulfur simply by following the below-mentioned steps.

Our clients have been following these steps for quite sometime and the feedbacks that we’ve received so far are literally encouraging.

How Can I Darken Copper Sink With Liver Of Sulfur?

Especially for the beginners, darkening copper sink with liver of sulfur is one of the easiest and most effective methods that we recommend to our clients.

Though it looks and smells horrible still we recommend as it works like a MAGIC.

Liver of Sulfur is available in gel, liquid, or even lump form.

The primary objective of liver of sulfur is to create an antique looking patina on copper as well as other metals.

Clean Your Copper Sink

To begin with, clean your copper sink using a grease-cutting cleaning solution.

By doing so, you would be able to get rid of any build-up or debris that may be stuck on the sink’s surface.

Refrain from touching your sink with your bare hands rather use gloves for the same.

Moreover, your fingerprints can act as a hurdle and contaminate the surface that will cause the metal to resist the patina.

Use Liver Of Sulfur For Oxidising Your Copper Sink Surface

Once you’ve cleaned your copper sink in the best possible way that you could the next thing that you need to do is to apply the liver of sulfur in order to initiate the oxidation process.

For reaping the maximum benefits from the oxidation process, all you need to do is to follow the instructions mentioned by the manufacturer.

However, if you’ve got scarcity of time then you can buy pre-mixed solutions such as liquid forms.

Make sure the area is ventilated in order to prevent any harm caused due to fumes.

The thing that I really adore about Liver Of Sulfur is its ability to turn copper dark very quickly and easily.

Rinse With Baking Soda Solution

You would be needing baking soda solution in order to stop the darkening process once you’ve achieved your desired shade.

So, it’s always good to have baking soda solution handy in order to prevent any last-hour misadventure.

I would suggest you should work with a rag as soaking the whole sink in the solution would be a tedious and time consuming task.

Dry And Polish

The last step involved in the entire process is drying and polishing your copper sink.

All you need to do is to use a lint-free cloth for wiping the surface of your copper sink until it becomes dry.

For a shiny look and feel, you may use polishing paper or pads.

In order to maintain its shine, you can buff it regularly with a polishing cloth.

How To Darken Copper Sink With Green Patina?

What actually gives copper sink a unique character is the natural shade of a bluish-green patina.

If you’re NOT sure how bluish-green patina looks then you can definitely have a look at the Statue of Liberty.

Clean Your Copper Kitchen Sink

Use lint-free rag and dish soap to wash your copper sink.

Make sure it is free from specks of dirt, food particles, debris, etc once you’re done with the cleaning.

Moreover, be sure anything stuck with the surface of your sink is washed off.

Prepare The Solution

You need to prepare the solution that consists of two parts white vinegar, half part non-iodized salt, and one and a half parts of clear and detergent-free ammonia.

Spray Solution

Once you’re done with preparing your solution, the next thing that you need to do is to pour the solution into a corrosion-resistant plastic spray bottle and then evenly spray the surface in such a way that every nook & corner is covered.

Moreover, you’ve to be quick at spraying as large drops can cause streaks.

Don’t spray in abundance, a little would be better.

Allow The Solution To Get Settled

Once the sink has started soaking the solution, allow it to sit for an hour.

Make sure you’re giving enough time for the solution to settle in order to reap maximum benefits out of this step.


After the first application, you’ll notice areas that you might have missed.

Reapply the solution being extra generous around those spots.

It is a matter of experimenting with the process and finding out how you can achieve the shade you are looking for.

Allow To Dry

The patina will dry to a green powdery finish.

Refrain from rubbing the powder rather allow it to sit overnight.

The good thing about the green finish will set permanently over time.

You may be tempted to rub off any excess green powder, but it can ruin the finish. It is best to let it sit for at least six hours.

How To Darken Copper Sink With Brown Patina?

Well, to darken a shiny copper sink that resembles a penny, brown patina is the way to go.

Trust me, it is one of the coolest and easiest ways to give your copper piece a classic finish.

Clean Surface

Begin the process by cleaning a copper farmhouse sink with a lint-free rag, water, and dish soap.

You can even use other grease-cutting solution for this purpose.

This step is important to have a working surface that is free from any type of build-up that can interfere with the finish.

Prepare Baking Soda Darkening Solution

The process of preparing baking soda solution is simple, easy, and less time consuming.

All you need to do is to simply add baking soda to hot water until it is completely dissolved.

Place in a spray bottle that provides fine mist and avoids drops that can cause streaks.

Spray Solution On Sink

Using an even coat, spray the sink thoroughly making sure you don’t miss any areas.

To cover hard to reach corners, you may use cotton swabs soaked in the solution.

Allow To Dry

Once you’re done with completely soaking of every inch of the sink, all you need to do is to allow the solution to air dry.

Don’t wipe at this point or it can do more bad than good by altering the finish.

Moreover, after the finish is completely dry you’ll want to let it sit for at least an hour.

Well, after allowing it to sit for an hour or so, all you need to do is to revisit the surface with the solution, following the same method as in the previous step.

Furthermore, you’ll want to do a second coating of the solution only if you’re trying to achieve a darker color.

The finish will not be powdery like the green patina, instead, it will have a clean surface. Having a penny you can compare the sink to during the process will help you determine how dark you want to make the copper.

Things To Consider While Expediting The Aforementioned Steps

  • First thing first, make sure you’re wearing protective gears including gloves, goggles, masks, and clothing
  • Unfortunately, these products can cause adverse reactions if in touch with skin, eyes, or inhaled
  • In case of an accident, make sure you’ve a first aid kit
  • Also, you should be well-informed about the things that needs to be done if any part of your body comes in contact with the solution
  • At the same time, make sure you’re taking proper precautionary measures in order to protect your respiratory system
  • Materials used for copper sink patina repair are considered hazardous waste and must be disposed of correctly
  • You cannot simply throw the items away in the trash
  • When using liver of sulfur in lump form, beware that it is poisonous if inhaled and can also be a fire hazard as it is flammable


In this section, I would be responding to the queries related to how to darken a copper sink in order to help you in the best possible way that I could.

How Can I Darken Copper Quickly?

In order to speed up the darkening process, you would be needing the help of certain chemical solutions.

Some of the chemical solutions that could do the trick for you includes but not limited to conversion coatings, acid sulfate solutions.

On the other hand, natural weathering takes years for copper to darken.

Does Vinegar Harm Copper?

When it comes to removal of oxidation from the copper, vinegar does a good job.

In general, vinegar doesn’t harm copper if used in appropriate quantity.

However, excessive of anything is not good and the same theory holds true with vinegar as well.

What actually vinegar does is, it reacts with the metal effectively to dissolve copper oxide.

And, as a result, the surface of the copper shines again.

What is Patina on Copper?

Patina refers to the thin layer that variously forms on the surface of copper and other metals. It is a tarnish created by oxidation and often appears as a powdery bluish or greenish coating.

Can I Use Vinegar to Clean Copper?

Yes, however, the vinegar must be part of a solution and used appropriately. You can use a soft cloth to rub the copper with a mixture of water, vinegar, and salt. Rinse off until the solution is completely off and dry thoroughly.

What is Oxidized Copper?

Oxidised copper is a specific type of corrosion that is produced during a three-step process where copper oxidizes to copper oxide, then to cuprous or cupric sulfide, and finally to copper carbonate.

The end result is a green-colored copper layer or patina that forms over time.

How Long Does It Take For Copper to Tarnish?

In general, it takes somewhere around 50 to 85 days for the copper to tarnish.

Does Real Copper Turn Skin Green?

Yes, copper jewellery can cause your skin to turn green because of the reaction that it undergoes with your skin.

You can prevent your skin from turning green by coating your copper jewellery with clear nail polish and keep it away from water.

What Makes Copper Oxidize Fast?

You can sprinkle a small bit of salt on the surface of your copper sink in order to speed up oxidation.

It’s A Wrap Up

First and foremost, I would like to thank you for being with us till the end.

Secondly, I would like to bring to your notice that I along with my core team have put loads and loads of effort in coming up with this idiosyncratic superlative piece of information on the post, how to darken my copper sink?

And, in case, you liked my effort and wants to appreciate us then please do share this post with like-minded people and the ones who are searching for it.

After all, sharing is caring, isn’t it?

Cutting long-story-short, copper is a unique metal that changes it colors as the time progresses.

It reacts with the elements present in the air to change it color.

A copper sink is definitely an asset for your kitchen, thanks to its features and appearance.

However, it is equally important to be well-informed about copper kitchen sink in order to make an informed purchase decision.

The darkening of copper sink is easy if you’re following the aforementioned steps.

We’ve recommended the above steps to almost all our clients and the response that we’ve received so far are positive and enticing.

That’s all, as of now :):)