How to Clean a Cast Iron Skillet: Step-by-Step Care and Cleaning

Wash seasoned cast iron with warm water and a little mild soap right after cooking, then dry it completely and wipe on a thin coat of oil.

A wet skillet left in the sink overnight is how most cast iron dies — rust blooms across the cooking surface, and the black seasoning flakes off with it. The routine below takes about three minutes per use and keeps the pan nonstick for decades. The trick is timing: clean it while it’s still warm, not hot, and never let water sit on it.

Why Cast Iron Cleaning Rules Are Different

Cast iron’s nonstick surface is a layer of polymerized oil, called seasoning — not a factory coating. Harsh abrasives, long soaks, and dishwasher detergent strip it away; once gone, food sticks and the metal rusts.

Lodge’s care guidance is blunt on two rules: hand-wash after every use, and never put cast iron in the dishwasher. You also never soak it. Water left on bare iron begins oxidizing within hours, which is why drying matters as much as washing.

These instructions apply to seasoned, non-enameled cast iron; enameled cast iron gets its own treatment below.

How to Clean a Cast Iron Skillet Step by Step

Clean cast iron with warm water, a stiff brush, and — despite the old myth — a small amount of mild dish soap if the pan is greasy. Modern dish soap won’t harm a well-seasoned surface. Follow this order:

1. Let the skillet cool until warm to the touch but safe to handle. Use a towel or pot holder for a warm pan.
2. Rinse under warm running water and scrub with a stiff-bristled brush or non-abrasive scrubber. For stuck-on food, sprinkle on coarse kosher salt as a gentle abrasive and scrub.
3. Add a few drops of mild dish soap only if the pan is oily or residue won’t budge. Skip it for everyday light use if you prefer.
4. Rinse thoroughly and dry immediately with a towel or lint-free cloth. Don’t air-dry.
5. Set the pan on a warm burner for about 30 seconds, or until every trace of moisture is gone.
6. Wipe a very thin layer of cooking oil across the entire surface, inside and out, then buff off the excess with a paper towel. The pan should look dark and slightly glossy, never greasy.

That last step is the one people skip, and it’s the one that matters most. A thin oil coat seals the iron between uses and builds seasoning every time you cook.

If rust has appeared, start with a cool, dry skillet rather than a warm one. Scour the rust off, then wash, dry, and apply a very thin, even layer of cooking oil inside and out. For a full reset, Lodge lists oven re-seasoning at 450–500°F for one hour. A rust eraser makes scouring far easier, and a stiff-bristled brush handles the rest — our guide to the best cast iron cleaning kit covers the tools worth owning.

The official cleaning steps above come straight from Lodge’s cast iron cleaning and care guide.

Mistakes That Ruin Cast Iron

Almost every ruined skillet traces back to five habits: soaking the pan (most common), dishwasher cycles (most destructive — the heated drying stage strips seasoning and flash-rusts iron in one pass), letting moisture sit after washing, routinely using harsh abrasives, and skipping the post-clean oiling. The pan looks fine for a week, then starts sticking.

Enameled cast iron breaks the rules in a good way. It’s technically dishwasher safe, but hand washing with warm soapy water preserves the finish longer, and citrus-based cleaners should stay away because they dull the enamel’s gloss.

FAQs

Can I use dish soap on a cast iron skillet?

Yes. A small amount of mild dish soap is fine on well-seasoned cast iron and helps cut grease. The old warning against soap dates back to lye-based detergents that no longer exist. Skip it when the pan just needs a rinse, and always dry and oil afterward.

How do I fix a rusty cast iron skillet?

Start with a cool, dry skillet and scour the rust away with a rust eraser or stiff brush. Wash and dry completely, then rub a very thin, even layer of cooking oil over the whole surface. If rust was widespread, re-season in a 450–500°F oven for an hour.

Do I have to oil cast iron after every wash?

Yes, a thin coat after each cleaning keeps the seasoning healthy and prevents rust. Buff off the excess so the surface looks glossy rather than greasy. A thick layer turns sticky and gummy, which defeats the purpose and attracts dust between uses.