Symptoms
- Cloudiness feels like part of the glass, not a film on top
- Vinegar soak doesn't restore clarity
- Problem is worse on delicate or older glassware
- Newer glasses cloud up faster than expected
Likely causes
- CommonHard water etching from repeated dishwasher cyclesHigh heat and mineral-rich water gradually erode the glass surface, unlike a removable film.
- PossibleDetergent with too much phosphate or an aggressive formulaCertain detergent chemistries can be harsher on soft glass over time.
- PossibleWater too hot or cycle too abrasive for delicate glasswareHigh-heat sanitize cycles can accelerate etching on thinner or lower-quality glass.
What to do
- Test one glass by soaking it in white vinegar for several minutes; if the cloudiness remains, it's etching, not a removable film.
- Stop hand-washing delicate or expensive glassware in the dishwasher going forward.
- Lower the water heater slightly if it's set very hot, and use a normal cycle rather than sanitize for glassware.
- Switch to a gentler, phosphate-conscious detergent if hard water etching is an ongoing issue.
- Consider a water softener if your home has notably hard water and this happens often.
- Accept that already-etched glass cannot be restored to clarity and will need replacing if the haze bothers you.
Tools and parts
- Bowl for vinegar test
When to call a pro
This is a water chemistry and glass wear issue, not a machine defect; no appliance repair is needed.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.