Don’t Use Windex To Clean These 6 Things

Windex, as you probably know, is the standard go-to for glass and mirror cleaning. It works great on the right surfaces, but it’s not as harmless or universal as it seems. Using Windex on the wrong materials can leave damage that’s tough or impossible to reverse. Here are seven things you shouldn’t use Windex to clean and what to do instead.

1. Wood Furniture

Windex contains ammonia, which can strip the finish off wood and leave it dull or patchy. Even sealed wood can take a hit over time, especially if the seal starts to break down thanks to repeated Windex use. Regular use can also dry out the wood, causing it to crack or discolor. Instead, stick to a cleaner designed for wood, or use a simple, safe mix of mild soap and water. Make sure to dry it off right away to prevent any water damage.

A wooden patio set, slat table with four chairs.
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2. Electronics Screens

TVs, laptops, tablets, and phones all have special coatings on their screens to reduce glare and protect from smudges. Windex can eat away at those coatings and leave the screen cloudy or otherwise permanently damaged. It can even seep into the edges and cause internal problems if you’re not careful. Instead, use a microfiber cloth with just a little bit of water or a screen-safe cleaner made for electronics. Don’t spray anything directly onto the screen, always onto the cloth.

A person's desk setup with two computer monitors.
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3. Granite and Marble

Natural stone like granite and marble might seem sturdy, but they’re sensitive to acidic and abrasive ingredients. Windex can wear away the sealant and make the surface look dull or streaky. Over time, this can lead to etching, especially in marble. If you’re cleaning stone countertops, use a cleaner made specifically for stone, or mix a few drops of dish soap with warm water and wipe it down gently.

A modern kitchen with marble counters.
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4. Eyeglasses

On the surface, using Windex on your glasses seems like it wouldn’t be a problem since he lenses are indeed made of glass, but it’s not a great idea. Most lenses have protective coatings that Windex can strip or cloud. This can lead to blurry spots or even weaken the lens itself. Instead, rinse glasses with lukewarm water and a tiny bit of dish soap, then dry with a clean, soft cloth. Or, even simpler, you can also use a lens spray made specifically for glasses.

A pair of wire-framed glasses.
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5. Stainless Steel Appliances

Windex can leave streaks and even cause discoloration on stainless steel over time. If used too often, it can dull the surface or create blotchy areas that are tough to clean. Stainless steel needs a cleaner that works with the grain of the metal. A mix of dish soap and warm water or a stainless-specific spray will give you a streak-free shine without the risking any damage.

A kitcchen with stianless steel appliances.
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6. Painted Surfaces

Using Windex on painted surfaces (be it walls or furniture) might remove surface-level dirt, but it can also lift the paint. Over time, the ammonia in Windex breaks down paint, especially if it’s water-based or matte. Instead, use a mild general cleaner or just water and a microfiber cloth for regular cleaning. For tougher spots, a dish soap mix should get the job done, just be sure to spot test beforehand.

A person's hand using a paint roller to paint a wall blue.
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Windex has its place, but it’s not made for every kind surface. There’s too many ways it can strip, damage, or otherwise ruin specialty surfaces that it’s not worth the risk. Keep your Windex to your glass and other, softer cleaners for everything else. Your home will thank you!