Here are the solutions for dealing with foggy car windows: 1. Open windows for air circulation: If the fog inside the car is not too heavy, you can slightly open both side windows to create air circulation between the inside and outside of the car. This reduces the temperature difference and gradually dissipates the fog. The principle of this method is the same as using the air conditioner's cold air, but it does not increase fuel consumption. The downside of opening windows is quite obvious—it cannot be used during rain or snow, on highways, or when the fog is heavy. Additionally, opening windows lowers the temperature inside the car. 2. Use the air conditioning system: For most car owners, using the air conditioning system to defog is the most common method. Almost all cars on the market have air vents located under the front windshield. Simply adjust the air conditioning to the appropriate setting to use the airflow to remove fog. Both cold and warm air have their pros and cons. If you're in a hurry, you can use cold air as an emergency solution. However, in most cases, warm air is recommended. 3. Anti-fog products: In many markets and auto parts stores, there are stalls selling specialized anti-fog products, such as anti-fog sprays or fog-resistant towels. Spray these anti-fog products onto the inner surface of the car windows and wipe them clean. While removing dirt from the glass, they also form a thin, transparent protective film that prevents moisture from condensing on the glass and forming fog. One application can prevent fogging for about 10 to 15 days.
