
Here are methods to restore clarity to blurry car glass: 1. Apply anti-fog spray: When using a defogger, simply spray it evenly on the glass surface and wipe clean with a dry towel. This leaves a protective film that alters water molecules' surface tension, causing fog droplets to coalesce into larger beads that don't obstruct vision. This method also works for other car glass, especially side mirrors. 2. DIY detergent defogger: Mix dish soap and water in a 1:6 ratio, spray and wipe before driving. The effect matches commercial defoggers though with slightly shorter duration. Alternatives like soapy water, hand soap, or laundry detergent are less effective than dish soap.

I've experienced blurry car windows many times, usually due to dust and oil stains on the outside, or water marks left after rain. When cleaning, I first wipe with a clean, damp soft cloth. If that doesn't work well, I spray specialized car glass cleaner and then wipe dry with a clean microfiber cloth - avoid using regular paper towels as they can make it worse. Worn-out wiper blades that don't clear water properly can also worsen the blurriness; check the wiper rubber and replace it if worn. As for interior fogging, it's mostly caused by temperature differences creating condensation - turning on the AC with external circulation and defrost mode clears it quickly. Regular maintenance like periodic car washes or using a sunshade when parked to prevent dust buildup can significantly improve visibility. Don't delay these simple measures as they affect driving safety.

When I encounter blurry car windows during repairs, I often fix them myself. First, I check if it's external dirt or internal fogging. For dirt, I use a 1:1 mix of white vinegar and water, spraying it on and wiping with a soft cloth—quite effective. For stubborn grease, adding some baking soda water helps remove it completely. For internal fogging, don't panic—start the car, crack the windows for airflow, or set the AC to dehumidify. If the blur persists long-term, it might be due to worn wipers or fine scratches on the glass. Replacing the wiper blades with the right size doesn't cost much but improves clarity. For prevention, I recommend using wiper cleaning fluid after rainy drives and regularly checking to ensure the glass stays smooth. These small tips save money and work well.

Clear windshields are crucial for driving safety. I once had a near-accident due to blurred vision while driving in the rain. External dirt or bird droppings can be cleaned with specialized car glass cleaner. Parking under trees with a car cover helps prevent dirt buildup. Internal fogging is more dangerous—activate the AC compressor's dehumidification function for a few seconds to clear fog, or use anti-fog spray as prevention. If blurriness is caused by faulty wipers, replace them immediately to ensure clear visibility, especially during night driving. Maintaining clean glass is simple yet lifesaving—never neglect it.


