18 Things You Should Never Put in the Dishwasher (Even If You’re Tempted)

August 7, 2026

Nonstick pans

Yes, many are labeled dishwasher safe. And technically, they won’t melt.

But over time, the coating degrades faster. High heat + detergent = shortened lifespan.

If you want your pan to last, skip the dishwasher—or at least skip the drying cycle.

Ceramic-coated cookware

Here’s a weird one—ceramic pans aren’t fully ceramic. It’s just a coating.

And that coating doesn’t love harsh detergents or acidic cleaners.

Hand washing keeps that smooth surface intact longer.

Acrylic and melamine dishes

These are popular for a reason—lightweight, colorful, hard to break.

But dishwashers can cause:

It doesn’t happen instantly, which makes it easy to ignore… until it’s obvious.

Printed or hand-painted glassware

You know those measuring cups where the markings slowly disappear?

Yeah—that’s the dishwasher.

Printed designs can fade after just a few washes. Hand-painted pieces? Even more fragile.

Fine china with metallic trim

Gold accents and dishwashers are not friends.

The detergent and spray can cause the metallic finish to flake off. And once it’s gone, it’s gone.

Even if the rest of the piece survives, it won’t look the same.

Vintage china and delicate crystal

Some things aren’t about convenience—they’re about preservation.

Older pieces, especially repaired ones, can weaken under heat and pressure. Crystal can cloud over time.

You could risk it… but why would you?

Insulated mugs and tumblers

These rely on a sealed air gap for insulation.

High heat can break that seal. Once water gets in? It’s over.

Your “keeps coffee hot for 6 hours” mug becomes just… a mug.

Thin plastic containers

We’ve all done it—thrown in a takeout container thinking it’ll be fine.

Sometimes it is.

Other times, it comes out warped like modern art.

Top rack helps. Skipping heat dry helps more.

Containers with paper labels

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