How to Deal with Fogging on the Car Windshield?
2 Answers
Solutions for fogging on the outside of the car windshield are as follows: 1. Air conditioning defogging. This is the simplest and most effective method. Simply turn on the front window defogging mode, set the fan speed to maximum, turn on the A/C switch, and adjust the temperature to the lowest setting to remove fog. Additionally, some car models are equipped with electric heating for the rear windshield and side mirrors, which can eliminate fog in about a minute by turning on the switch. 2. Air convection defogging. Opening the windows increases air convection, reduces the temperature difference between the inside and outside of the car, and weakens the conditions for fog formation. This method is relatively economical but is suitable for fewer situations. 3. Defogging with anti-fog spray. The best method is to prevent fogging in advance by using an anti-fog spray. Its principle involves using surfactants to leave a protective film on the glass surface, altering the surface tension of water molecules, causing fog droplets to coalesce into larger droplets that do not obstruct vision. 4. Homemade anti-fog spray with dish soap. If you don't have an anti-fog spray, you can mix dish soap with water in a 1:6 ratio, put it in a bottle, and spray and wipe it before driving. The effect is comparable to that of an anti-fog spray, though the durability is slightly worse.
When I first started driving, I was really startled by the fogging on the windshield, especially in humid weather. I quickly figured out to press the defog button on the AC or simply turn on the fan at high speed blowing towards the windshield, which usually clears the fog in a minute or two. Prevention is also crucial. I make it a habit to check that the windows are dry before driving, avoid having too many people exhaling moisture inside the car, or use the external circulation for ventilation instead of opening windows in rain or snow. Sometimes, I also spray some special defogging agent, which isn't necessary but quite convenient. Remember, never wipe it with a cloth—it just smears and makes it harder to see. Staying calm is key when dealing with it. Now, I feel confident every time I drive, safety first after all.
