It will. Here's the truth about cleaning fine stemware.
What the Dishwasher Does
A dishwasher uses three things that attack champagne glass: heat, aggressive detergent, and mechanical action. The drying cycle hits 70-80°C. That thermal shock weakens the joint where the bowl meets the stem. Over a few cycles, that joint develops micro-cracks. One day, you lift a high footed champagne glass and the bowl stays in your hand while the stem stays on the table.
The detergent is worse. Dishwasher pods contain sodium carbonate and citrates. These etch glass over time. You've seen that rainbow, cloudy haze on old wine glasses? That's permanent chemical etching. You can't polish it away. Your beautiful champagne glass becomes a foggy mess.
The Mechanical Damage
Inside a dishwasher, high footed champagne glass stems clink against each other, against plates, against the spray arm. The rims chip. The stems scratch. A single sharp knock can snap a thin stem. You won't hear it over the machine noise, but you'll find the broken pieces when you unload.
The Right Way
Hand wash your wine glasses and champagne glass in lukewarm water (not hot). Use a mild, unscented dish soap. Fill one sink with soapy water, another with clean rinse water. Wash one glass at a time with a soft sponge. Never use abrasive pads. Hold the high footed champagne glass by the bowl, not the stem, to avoid twisting torque.
Rinse thoroughly. Dry with a lint-free microfiber cloth. Or air dry upside down on a rubber mat.
The Only Exception
If your champagne glass is thick, tempered soda-lime glass labeled "dishwasher safe," you can risk it occasionally. But true high footed champagne glass made of lead crystal or fine hand-blown glass? Never. Not once.
That "dishwasher safe" label on a wine glasses box usually means "won't break immediately," not "will stay clear for years." If you care about clarity, longevity, and not embarrassing yourself with a snapped stem at your next toast, hand wash your high footed champagne glass. It takes three extra minutes. Your glasses will look brilliant for a decade instead of cloudy after ten cycles. Your guests will notice the difference—even if they don't say it.
