Why Cast-Iron Skillets Should Not Go in the Dishwasher

Dishwashers expose bare cast iron to prolonged moisture and detergent cycles that can degrade seasoning and encourage rust. Hand-washing and prompt drying are safer for ordinary cast-iron cookware.

Understand the risks

Repeated washing, hot water and harsh dishwasher detergents can damage the protective cooking surface. The pan may emerge with pale, rough or rusty areas.

Use a quick hand-wash routine

Remove food residue with warm water and a brush. A little mild dish soap is usually okay. Dry thoroughly with a cloth and warm gently if needed.

Restore if someone used the dishwasher

Clean away any rust, dry and re-season with a very thin oil layer. The skillet is often recoverable, but inspect for damage before use.

Frequently asked questions

Is enameled cast iron different?

Some enameled manufacturers permit dishwashing, but hand-washing is often recommended to preserve the finish. Check your product instructions.

Related: how to clean cast iron skillet after cooking.