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Windex vs Invisible Glass—Here’s What’s Best for Car Glass

Looking for the best glass cleaner or window cleaner for your vehicle? While both Windex and Invisible Glass are commonly used, we recommend Invisible Glass as the superior product to achieve a streak-free finish.

Invisible Glass by Stoner Car Care

🏆 Our Pick for Glass Cleaning

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Invisible Glass cleaner aerosol

Granted, getting a streak-free finish has as much to do with your towel and process as it does with the product itself. More on that later.

Apples to apples, there’s a reason why pro detailers prefer Invisible Glass to clean windows: It simply performs better and is safer on all types of automotive glass.

Why we recommend Invisible Glass

Few products are as easy to find and leave windshields as crystal clear as Invisible Glass, which is why we recommend it for the average Joe. Some more expensive liquid glass cleaners can be debated as the best, but few can truly do a great job on both sides of the glass.

Max clarity—not necessarily raw cleaning power—is the name of the game for any good auto glass cleaner. You want a streak-free shine when driving after all!

I view Invisible Glass more as a glass polisher than a cleaner because I don’t use it to remove bird droppings or heavy stuff. That’s the job of car soap. After all, most of the time exterior glass is already clean after washing.

Quick Tip

For cleaning, use Invisible Glass for greasy fingerprints or smudges on the interior, quick touch-ups, and minor water spots. For hard water spots that you can’t remove, use rubbing alcohol or isopropyl alcohol.

Invisible Glass: spray or aerosol? 

You can achieve the same results whether or not you use Invisible Glass in either aerosol or liquid form. I tend to use both types and will normally use the aerosol product on interior surfaces because it mists instead of spraying. 

Any time droplets of water fall on interior surfaces like dashboards (overspray), you’ll often see water spots when dry.

How to apply Invisible Glass properly

Step 1: Wash exterior glass with car soap

For best results, always follow your normal washing and drying routine before applying Invisible Glass. For example, you may need to use an adhesive remover or a bug removal product depending on what’s on your windshield or windows.

Quick Tip

Never clean car windows with a paper towel, since tiny wood fibers will remain. A low-pile microfiber towel or waffle weave towel is the best choice because you’re less likely to leave streaks or lint on the surface.

Step 2: Spray on and wipe with a microfiber towel

Spray the product on the surface, spread it evenly with a low-pile microfiber towel, and wait about a minute. Invisible Glass is known to leave a thin haze on the windshield until it’s had time to cure. 

Step 3: Let dry and buff off 

Using a separate but clean microfiber cloth, buff off any remaining haze until you achieve the streak-free results you want.

Humidity can sometimes cause products like Invisible Glass to look hazy, and sometimes you’ll need to wait it out to see great results. To minimize haze caused by other products, always keep your microfiber glass towels separate from the rest; any trace of wax or leather cleaner on a towel can ruin a clean windshield.

Can Windex be used on vehicle glass?

On non-tinted windows like exterior glass, Windex can technically get the job done, but its performance is average compared to automotive-formulated glass cleaners like Invisible Glass. Regular, blue Windex is an ammonia-based cleaner that may damage window tint—a big reason many detailers generally don’t use it. The smell of ammonia can also be strong if used on interior glass.

Granted, Windex does make a streak-free product now, but it still isn’t superior to most automotive glass cleaners.

Cleaning power of Windex vs. Invisible Glass

Since Windex is a general-purpose glass cleaner that contains ammonia and detergents, I’ve found it cuts through heavy grease and grime a bit better than many automotive glass cleaners.

But that doesn’t make it better for auto detailing.

Windex is designed to remove contaminants like soap scum or even toothpaste on neglected surfaces, so the formula is generally stronger. 

Learn how to clean car windows like a pro

Especially on older vehicles, stuck-on substances require clay or even a razor blade to remove before you can truly expect streak-free results. Check out our post on how to restore a windshield to like new for a simple tutorial if window cleaners don’t seem to be working.

Interior haze is another common problem area that both Windex and Insvible Glass often can’t remove.

Check out our post on what causes windshield haze and how to remove it if you have this problem. For example, direct sunlight can cause interior protectants to heat up, evaporate…and stick to the windshield.

Good luck and happy detailing!

Ready to improve your washing and detailing skills?

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Baxter Overman is the founder of Carwash Country and has been been cleaning up dirty vehicles for nearly 20 years. Since 2017, he's helped thousands of beginners see better results by learning the fundamentals of washing and detailing. He's on a mission to make the car wash process more fun...and way easier.

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