Why Do Glasses Get Cloudy In A Dishwasher [+ How To Fix It]

Last Updated on July 1, 2022

Ever wondered why glasses get cloudy inside your dishwasher? Well, it turns out that they don’t really fit the washing machine very well. The heat from the water causes the lenses to expand and contract, which makes them crack or bend.

Glassware isn’t designed to withstand high temperatures, so it’s important to wash them carefully. If you want to ensure that your glasses stay clear and free of scratches, read our guide to cleaning glasses.

You should always check the manufacturer’s instructions before using your dishwasher. If you notice that your glasses aren’t fitting properly, then it’s time to replace them.

Why do glasses get cloudy in a dishwasher?

Glasses tend to absorb water from any liquid stored in them. You should rinse them thoroughly after using them, but if you leave them in the sink overnight, they will dry out and crack. The moisture content of the glass will slowly leach into the surrounding air. This results in a film forming over the surface, making it cloudy. The solution is to place the glasses in the dishwasher. As long as you remember to remove them before washing dishes, they’ll remain clear.

If you have a lot of glasses, you can also use an automatic dishwasher. These machines are specially designed to clean all types of glassware. They work by spraying hot water at the items, which helps to loosen dirt and grime.

What can you do to prevent cloudy glasses?

If you notice your clear glassware becoming cloudy, it could be caused by oxidation. Oxidation occurs when the air gets into contact with the surface of the glass. This process happens naturally and does not necessarily mean there was something wrong with the item. However, if the glass becomes cloudy after being cleaned thoroughly or stored in direct sunlight, it needs to be replaced.

You can prevent cloudiness from occurring by cleaning your glassware properly. Make sure to wash everything well and dry completely before storing. If you are storing your items in the fridge, remove any labels and store them inside a container. If you see that the glass is getting cloudy, discard it immediately. Do not leave it sitting around because it may get worse.

How to prevent glass corrosion in your dishwasher?

Glassware that needs cleaning in your dishwasher should be cleaned prior to washing. Cleaning the glassware after washing ensures that any soap residue left behind from your previous wash will not damage the glassware. This will protect your glassware from scratching and breakage. To ensure that your dishes stay scratch free, place your glasses into the drying rack after your dishwasher finishes running.

How to clean drinking glasses in the dishwasher?

Glassware is a very common household item, but not all glassware needs to be cleaned properly in the dishwasher. For instance, if you wash dishes by hand and rinse them well, then you could skip using the dishwasher. But if you use commercial dishwasher detergents to clean your dishes, you should always place your glassware into the dishwasher. In addition, to reduce the chances of breakage, always arrange your glassware inside the dishwasher from least-risky side (least likely to hit something) to safest side (most likely to hit something). Do not put any paper towel under your glassware while placing it inside the dishwasher. Glassware normally comes in two types – regular or stemless. Regular glassware does not have a stem attached to the bottom of the glass. Stemless glassware has no stems; instead, they have indentations where the stems used to go. To get rid of fingerprints, you can wipe your glasses with a damp cloth. Never use an abrasive cleaner on your glasses. It will scratch and ruin them.

How to clean crystal glasses in the dishwasher?

Crystal glasses are delicate pieces of glassware that need special care. They are prone to breaking easily, so make sure to handle them carefully. Always keep your crystal glasses away from other objects such as silverware, plates, etc. When cleaning crystal glasses, avoid using harsh chemicals like bleach or ammonia. Instead, use milder solutions like vinegar, baking soda, or lemon juice. You can also use warm water mixed with a few drops of essential oil. Once you finish cleaning your crystal glasses, allow them to dry completely before storing.

How to clean stemless wine glasses in the dishwasher?

Stemless wine glasses are fragile pieces of glassware that require careful handling. Because these glasses do not have stems, they tend to break more easily than their stemmed counterparts. Follow the same instructions for cleaning crystal glasses to clean stemless wine glasses. Vinegar works great for cleaning stemless wine glasses, but you can also use baking soda or lemon juice to clean stemless wine glasses.

How to clean champagne flutes in the dishwasher?

Champagne flutes are made out of thick, durable glass. These glasses are usually placed at the center of the table during celebrations and parties. Although champagne flutes are sturdy enough to withstand heavy usage, they still need proper care and maintenance. If you want to clean your champagne flutes, follow the steps below: First, remove the foil liner from the top of the glass. Then, soak the entire piece of glassware in hot water for about 10 minutes. After soaking, gently squeeze the excess water from the bottle. Next, add some vinegar to the glass and let it sit for about 5 minutes. Finally, rinse the glass thoroughly with cold water. Dry the glass with a soft cloth.



Finding cloudy and foggy glasses after your dishwasher has just cleaned them is rather exasperating. Imagine that your glasses had cycled through the whole process only to leave you with nothing but disappointment, Alas! While dishwashers are a must-have if you have a huge family or have gatherings. However, if your glasses appear dull and seem to have a milky film on them, there may be more than one reason that is resulting in this that you might want to take a look at. Today, we have outlined the different reasons why you are experiencing the crisis of cloudy glasses.

Hard Water

Among the main causes, hard water is the most common problem that affects your glasses to give the appearance of being fogged. Water hardness signifies that your water supply might contain a high concentration of various metals and minerals such as calcium and magnesium that may be making your items difficult to wash. Hence, if your water supply consists of water where there may be deposits, such as limescale, that often stick onto your glass. The minerals in the water decrease the potency of your detergents, which indicates that you may require extra detergent to wash your glasses. It is important to address this issue at the earliest, as this will only get more concerning. If you wait longer, the deposition on the glasses will become very problematic to remove. To confirm that hard water might be the cause of your cloudy glasses then you can test it out by a simple procedure. The first step is to soak your glass with vinegar and wait for around 5 minutes. Then check if the fog is removed or not and if it is removed, then hard water is likely to be the culprit.

How to fix it?

1. Use More Detergent

Since the minerals are deposited to the surface of the glass, you will have to use extra detergent to get rid of the excess soap or stain and rinse it off. Also, keep the temperature of your dishwasher above 130° Fahrenheit to make the water hotter as it works perfectly for tackling the problem of hard water. On the other hand, you need to make sure that the detergent is used adequately and not so much which can induce further lather to be formed. Therefore, try to find the right amount of detergent that needs to be used to get the best results.

2. Make use of a Rinse Aid

Rinse aid is extremely essential when there are white remnants and water spots, using this ensures that you attain sparkling glasses. These are simple for usage and come in both liquid and solid forms. Dishwashers often contain specific automatic dispensers that let out the rinse aid during the last washing cycle making it hassle-free and the process of drying much faster. Furthermore, below is a list of some of the best-recommended rinse aids that will help solve your problem of cloudy glasses. This list includes some of the most renowned brands for detergents so that you can get the most promising and effective product.

1.Finish Jet-Dry Rinse Aid

This Finish Rinse Aid is an excellent product and is the world’s #1 recommended brand and is a number one bestseller along with having 4.8 out of 5 stars on Amazon. This rinse aid will make your glasses glisten and shine as it has a glass protection ingredient. It also removes all the milky film stuck on your glass and promises a 100% greater drying. View on Amazon https://www.amazon.com/Finish-Jet-Dry-Rinse-Dishwasher-Drying/dp/B00C9SOB1K

2. CASCADE Platinum

The Cascade Rinse Aid is another incredible product that will give your glasses a stunning sparkle and turn it into new. It has a protective shield to prevent streaks, spots and residues. It also has 4.8 out of 5 stars on Amazon. Moreover, it provides fantastic drying and is a #1 Recommended Brand in North America. View on Amazon https://www.amazon.com/dp/B01FNXL5XE/


Next is another particularly important factor when it comes to having cloudy glasses and that is Etching. This is a type of deterioration and wear and tear of the glass material over time because of regular usage that formulates into little holes and scrapes. This is mainly caused by soft water, using way too much dish soap, using detergents with phosphates and overmuch rinsing.

How to fix it?

1. Avoid Using Detergents With Phosphates

While detergents with phosphates can soften hard water and clear out the unwashed glasses, although it can cause irreversible damage to your glasses as it would have assertive and detrimental outcomes since it is very rough on your glass, causing scratches to be formed. Hence, try using a different detergent especially one with a low pH.

2. Excessive Washing/ Pre-Rinsing

When you overwash your glasses heavily or have a habit of scrubbing your glasses before using the dishwasher. This gives birth to harmful impacts, as the detergents that are used for dishwashing consists of alkaline salts that would be ideal for dirty dishes containing oils which would eventually get neutralised. However, if the glass is washed extensively, then there is no room for the neutralisation to take place, making the cycle rigorous for the glasses.

3. Don’t Use High Heat

When you use high heat in the case of etching, it can make the matter worse. Therefore, any temperature above 140° Fahrenheit is not suitable, as this would give rise to far more etching.


In conclusion, these were some suggestions and solutions for why you encounter those odd white stains on your glasses. If you follow the given simple instructions and points you can easily avoid having a cloudy reaction on your glasses. Although do keep this in mind certain pointers that avert any other damage, for example having a clean drain is crucial as it would prevent the dirty water from dwelling there. Also, ensure that you are not using very delicate glasses in the dishwasher as they could be potentially damaged. With these factors, you can have pristine and squeaky-clean glasses and will enable in maintaining your glasses and keeping them secure and in the best condition.


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