Cloudy Glasses? Here’s How to Tell If They’re Ruined (and What to Do Next)

You pour a crisp white wine or sparkling water, only to notice a hazy film on the glass dulling its shine. It’s a small detail, but one that can make even the most put-together kitchen or dining room feel slightly less polished. And while cloudy glassware is often caused by mineral buildup that can be removed, that’s not always the case—sometimes, the damage is permanent.

Fortunately, with the right approach, you can figure out what’s behind the haze—and whether your glassware can be restored to its original clarity.

What Causes Glassware to Become Cloudy?

According to home maintenance expert Angie Hicks, co-founder of Angi, there are two primary culprits behind that foggy finish: mineral buildup and etching. "Hard water leaves behind a residue of minerals like calcium and magnesium, which build up over time and create a hazy film," Hicks explains. This type of cloudiness is the more forgiving of the two and most often reversible with the right cleaning method.

"Etching, on the other hand, is permanent damage caused by repeated exposure to high heat, harsh detergents, or overly aggressive dishwasher cycles," Hicks says. "The key difference is that mineral buildup can be removed, while etching cannot."

Assess the Cause

Before you start scrubbing, it’s worth figuring out what you’re dealing with.

Quick Test: A quick vinegar test can tell you if the haze is removable—or permanent. Soak or rub a small area of the glass with white vinegar, then rinse and dry it. If the cloudiness clears, you’re dealing with removable mineral buildup. If there’s no change, the glass has likely been etched—meaning the damage is permanent.

How to Remove Cloudy Buildup

If the vinegar test clears the haze, you’re dealing with mineral buildup—and a deeper soak can fully restore the glass. "The safest and most effective method is to soak glassware in a solution of white vinegar and warm water," says Hicks. "Vinegar naturally dissolves mineral deposits without damaging the glass."

1. Fill a basin or sink with warm water and add white vinegar. You’ll want the vinegar diluted, but enough should remain to effectively break down buildup.
2. Submerge the glassware, ensuring each piece is fully immersed so the vinegar solution can reach all surfaces. Allow to soak. 
3. "After soaking for 10–15 minutes, gently wipe with a soft cloth or non-abrasive sponge," Hicks says. "Avoid using anything abrasive, like steel wool or rough scrubbers," she warns, "as these can scratch the surface and make cloudiness worse."
4. Rinse thoroughly to remove any lingering vinegar and loosened residue.
5. Dry by hand completely with a microfiber cloth to prevent new water spots from forming.

Related Stories

Should You Store Glasses Up or Down? Our Readers Are Split on This Topic—But There's a Right Answer

8 Items You Should Never Put in the Dishwasher

If Your Glassware Is Etched

If the haze remains after testing or treating with vinegar, etching is likely the culprit. Unlike mineral buildup, etching isn’t something you can remove—it’s permanent damage to the surface of the glass. It’s safe to use, but it may never regain its original sparkle.

At that point, prevention becomes your best strategy for preserving the clarity of the rest of your glassware pieces.

How to Prevent Glassware From Becoming Cloudy

"Prevention starts with managing both your water and your dishwasher habits," says Hicks. If hard water is the root of the problem, try incorporating tools that minimize mineral deposits. "If you have hard water, consider using a rinse aid or installing a water softener to reduce mineral deposits," she suggests.

Your dishwasher settings also play a role. "Use the right amount of a gentle detergent," Hicks says. "Too much can contribute to etching, and opt for lower heat settings when possible." Finally, taking a moment to hand-dry can make a noticeable difference in maintaining clarity. According to Hicks, "It also helps to dry glassware promptly and avoid letting it air dry in the dishwasher, where minerals can settle back onto the surface."