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

list, it helps to understand what’s happening inside.

A dishwasher blasts hot water (sometimes really hot), mixes it with strong detergent, and sprays everything at high pressure. Then it dries items with even more heat.

That combination—heat, moisture, and chemicals—is exactly what damages certain materials.

Some things crack. Others fade. A few quietly fall apart over time.

And you don’t always notice right away, which is part of the problem.

Some dishwasher mistakes are obvious, but others can quietly damage cookware and kitchenware over repeated cycles.

The Obvious “Don’t Even