How to Defog?

[DeAlex]

Using the air conditioning to defog is a common practice. Turn on the cold air and blow it onto the glass for a direct defogging effect. Lower the side windows slightly to allow air convection inside the car. When the interior temperature approaches the outside temperature, the fog will dissipate. Mix dishwashing liquid and water in a ratio of about 1:10, then use a clean, soft cloth to apply the solution to the inside of the front and rear windshields.

[LouisLynn]

When the windows fog up, I usually turn on the air conditioning immediately and set it to the windshield defrost mode. Setting the temperature to warm or hot air is most effective, as it quickly removes moisture. If there's no rush, slightly opening the windows to allow air circulation can also gradually clear the fog. I always keep a bottle of anti-fog spray in the car, and wiping the glass clean before use works even better, especially during winter rainy days when fog comes on strong—safety first. Remember to check if the wipers are clean before driving, as dirt can worsen fogging. Some people take the shortcut of wiping the windows with their hands, which provides a temporary fix but leaves streaks that impair visibility. It's safer to use professional methods.