Rust on cast iron skillets is a common issue that many of us face, but it doesn’t have to be the end of your favorite pan! 

We believe that with a little care and attention, your cast iron skillet can last for generations, delivering perfect meals every time. As much as we love the rich, flavorful results that come from cooking with cast iron, maintaining the skillet is crucial for its longevity and cooking quality. With the right techniques, removing rust from a cast iron skillet is easier than you might think.

In this guide, we’ll walk you through how to remove rust from your cast iron cookware, restore its protective layer, and keep it in top shape for years of cooking enjoyment. 

If you're looking for more ways to deal with rust on other types of kitchenware and utensils, check out also our guide on how to deal with rust on different materials.

Why do cast iron skillets rust?

We love the versatility of skillets and fry pans, as we use them for a wide range of cooking tasks, but we know rust is a common issue we often have to deal with. In fact, cast iron pans are more prone to rusting than other cookware due to the material they’re made from.

The good news is that in most cases getting rid of the rust and bringing your pan back to its original condition is fairly easy.
Rust forms on cast iron skillets when moisture interacts with the iron, causing oxidation. Moisture, whether it's water left on the skillet after cleaning or the humidity in the air, reacts with the iron over periods of time, leading to the formation of rust.

Improper care is another big factor, such as not drying the skillet thoroughly after cleaning or leaving it in a damp place. We’ve all been guilty of this at some point!
Additionally, when the skillet’s protective layer of seasoning is compromised, either from over scrubbing or the absence of seasoning, rust can quickly appear.

It's also important to note that cast iron skillets, which are often uncoated, are more susceptible to rust compared to cast iron skillets with an enamel coating. Even a small amount of moisture or oil can lead to future rust if the skillet isn’t maintained properly. Understanding these causes can help us avoid a rusty cast iron skillet in the future.

How to Identify Rust on Your Cast Iron Skillet

Identifying rust on your cast iron skillet is quite easy!
While high quality brands like Lodge, Le Creuset, Staub, and GreenPan take extra care to enhance rust resistance through seasoning treatments and enamel coatings, over time, you may notice reddish brown spots or a patchy, flaky surface. That's a sign that your skillet has been exposed to moisture for too long, potentially leading to rust formation. 

But we don’t stop there, gently running your fingers over the surface can also reveal tactile signs of rust. You might feel rough, uneven patches or even a powdery texture where the rust has started to flake off.

Assessing the severity of the rust is the next important step. Light rust, which can be easily removed with a scouring pad or steel wool, won’t affect the performance of your skillet much. However, if the rust is deeper or more widespread, it might require a more thorough cleaning and re-seasoning to restore its surface properly. Whether it’s just surface rust or more serious corrosion, identifying the problem early will help you determine the right course of action to get your skillet back to its best.

Step by Step Guide to Remove Rust from Skillets

When it comes to saving your favorite cast iron skillet from the dreaded rust, it might seem like a big task, but don’t worry, your skillet is far from lost, and we’re here to help bring it back to its glory!

The steps we've outlined below are just examples of how to tackle rust removal from a cast iron skillet, but the process may vary depending on how severe the rust is.

Whether you’re dealing with a little surface rust or something more stubborn, following these steps will help bring your skillet back to life and ensure it’s ready for future meals.

Step 1: Scrub Off the Rust

As a first step, let’s tackle the visible rust by scrubbing it off your cast iron pan. For lightly rusted cast iron, you can start by using a scouring pad or steel wool. These abrasive tools are ideal for scraping off the top layer of rust without damaging the skillet. We recommend starting gently, especially if you're worried about scratching the surface.

Using warm soapy water is fine for this step, but we suggest avoiding using soap on a skillet that’s not been properly seasoned, as this can strip away the seasoning layer. Once the rust begins to lift, make sure to focus on any stubborn spots, applying more pressure with the steel wool if necessary.

For an even more precise and effective result, we recommend using the Lodge Cast Iron Rust Eraser, a simple tool designed specifically to remove surface rust and bring old skillets back to life.

Step 2: Soak in a Rust-Removing Solution

If scrubbing isn’t enough, or if the rust has built up over periods of time, soaking your rusty cast iron skillet in a rust-removing solution is the next step.
We believe that using white vinegar is one of the most effective methods. Simply mix equal parts of white vinegar and water in a large container, and submerge your skillet for up to an hour. This acidic solution will help break down the rust without damaging the iron. For more stubborn rust, you can extend the soaking time, but be sure to check regularly.

Alternatively, you can use baking soda to create a paste that can be applied directly to the rusted areas. Another effective solution involves using lemon juice combined with salt for a more natural scrub. We love this approach because it’s gentle yet effective. Apply the salt to the rusted spots and squeeze the lemon juice over it, then scrub with a scouring pad or steel wool. This combination works as a mild abrasive, making it easier to remove the rust without harsh chemicals.

Step 3: Rinse and Dry Thoroughly

Once the rust is removed, it's essential to rinse your skillet thoroughly with warm soapy water to remove any leftover solution or rust debris. After rinsing, make sure to dry the skillet completely. Leaving moisture behind can lead to future rust formation. The best way to dry your skillet is by placing it on the stove over low heat for a few minutes, ensuring that any remaining moisture evaporates completely. You can also wipe it down with a paper towel or a clean cloth to speed up the drying process.

This step is crucial because even a small amount of moisture left behind can lead to rust returning, so we recommend being extra careful during the drying process.

Step 4: Season the Skillet

Once your skillet is rust-free and dry, it’s time to season it to protect it from future rust and give it that perfect non-stick finish. The process of seasoning involves rubbing a thin layer of oil over the surface of your cast iron pan and then heating it up to help the oil bond to the metal.

We like to use vegetable oil, but any oil with a high smoke point will work, avocado oil, grapeseed oil, or even shortening are great alternatives. To apply the oil, take a wadded-up paper towel, add about a teaspoon of oil, and gently rub it over the entire surface of the skillet. You don’t need too much oil; it should look almost dry, not shiny or greasy. If you notice excess oil, simply wipe it off with a clean towel.

If your skillet had just a bit of rust, simply place it on the stove over medium - low heat for about 5 minutes to allow the oil to settle. However, if your skillet was in worse condition, preheat the oven to 400°F (200°C). You can put a baking sheet on the lower rack to catch any drips. Bake the skillet for about an hour, then turn off the oven and let the pan cool inside.

You may need to repeat this process a couple of times until your skillet develops a smooth, dark surface that’s ready to cook on.

Alternative Methods to Remove Rust

While the steps we’ve already discussed are effective for most rust issues, sometimes the rust can be more severe, and you'll need to turn to alternative methods. Don’t worry, there are a few creative solutions that can work wonders for getting your cast iron skillet back into shape!

1.Electrolysis for Severe Rust

If your skillet is seriously rusted and the typical methods aren’t doing the trick, electrolysis can be a powerful solution. This process uses an electrical current to remove rust by turning the iron oxide (rust) into a non-corrosive substance. You’ll need a battery charger, a container for the solution, and a bit of patience. The process might sound complicated, but it’s a great way to deal with heavy rust damage. Just be sure to follow the safety precautions, as you’re working with electrical equipment and water.

2. A Household Remedy

For those looking for a more natural approach, you can try some simple household remedies. One of our favorites is using a potato and baking soda.
Yes, you heard that right! Cut a potato in half and sprinkle the cut side with baking soda. The potato contains oxalic acid, which helps dissolve rust, while the baking soda acts as an abrasive to scrub it away. Rub the potato on the rusty surface and let it sit for about 30 minutes. Then rinse thoroughly and dry the skillet carefully. This method is especially great for removing light rust and giving your skillet some love without using any harsh chemicals.

Common Mistakes to Avoid

Taking care of your cast iron skillet is easier than it seems, but a few common mistakes can impact its lifespan. We’ve all made them, but here’s what we suggest avoiding:

1. Using Soap on Unseasoned Skillets

While it’s tempting to scrub away all the food bits with soap and water, doing so can strip the skillet of its protective seasoning layer, leaving it vulnerable to rust. Instead, avoid soap, and use warm water or a brush for cleaning instead.

2. Not Drying the Skillet Properly After Cleaning

Leaving your skillet wet can lead to rust. Always dry it thoroughly with a paper towel or cloth immediately after cleaning. You can even heat it on the stove to ensure all moisture evaporates.

3. Over-Scrubbing the Surface

Scrubbing too hard can damage the seasoning. Use gentle methods, and only use a steel wool or scouring pad when necessary.

3 Tips to Prevent Rust on Your cast Iron Skillet

Once your skillet is in top shape, the key to ensuring it stays that way is proper care and maintenance. We always say, a little effort goes a long way when it comes to keeping your cast iron skillet rust-free. Here are our best tips to avoid rust from taking hold in the first place:

1. Proper Storage

Avoid damp environments when storing your skillet. Moisture is the enemy of cast iron, so make sure your skillet is completely dry before putting it away. If you live in a humid climate, consider placing a paper towel inside the skillet to absorb any residual moisture. We also recommend keeping your skillet in a well ventilated area, this allows air to circulate and prevents rust from forming.

2. Regular Maintenance: Cleaning and Re-seasoning

We can’t stress enough how important it is to clean and re-season your cast iron skillet regularly. After each use, wipe down the skillet with a paper towel to remove any food particles and excess oil. While some prefer to clean their skillet with just warm water, we suggest giving it a light scrub with a non-abrasive brush for tougher residue. Doing this after every use helps maintain the skillet’s non-stick surface and prevents rust from forming.

3. Avoid Dishwashers and Harsh Detergents

Dishwashers and harsh detergents are a big No for cast iron cookware. These can strip the seasoning, leaving the skillet vulnerable to moisture and, eventually, rust. Stick to hand-washing with warm soapy water (if necessary) and a gentle scrub, followed by immediate drying. Never let your skillet soak in water, as prolonged exposure to moisture can lead to rusting.

FAQs About Removing Rust from cast Iron Skillets

Can I still use my skillet if it has rust?

Yes, you can still use a rusty cast iron skillet, but we recommend removing the rust before cooking to prevent any off flavors or further damage. After rust removal, re-season the skillet to restore its protective coating.

How often should I season my skillet?

We recommend seasoning your skillet after each use. If you cook with it often, a quick re-seasoning is enough to maintain the non-stick surface and prevent rust. Just apply a thin layer of oil, heat it up, and you’re good to go!

What oils are best for seasoning?

The best oils for seasoning are those with a high smoke point. Vegetable oil, canola oil, or flaxseed oil are all excellent choices. Avoid olive oil for seasoning, as its lower smoke point can leave sticky residues.

Final Tips

In conclusion, restoring and maintaining your cast iron skillet doesn’t have to be complicated. With the right care, your skillet can last for generations! If you need products for your cast iron cookware, we recommend looking into quality cast iron skillets from brands like Lodge or Le Creuset. For seasoning, a good choice is vegetable oil or flaxseed oil, both are reliable and widely available.

By following these simple tips, you’ll keep your skillet rust-free and in prime cooking condition, and you can thank us later!