What to Use to Wipe Glass to Prevent Fogging?
3 Answers
You can use dish soap or soapy water to wipe the glass to prevent fogging, because soapy water and dish soap contain surfactants that effectively prevent water vapor from condensing on the surface, thus serving as an anti-fogging measure. Mix dish soap and water in a ratio of approximately 1:10, then use a soft cloth to apply the prepared solution to the inside of the front and rear glass. Wiping it first and letting it dry will enhance the anti-fogging effect. The principle is as follows: 1. The active molecules in dish soap can be divided into two parts: one end is a charged, polar hydrophilic group, and the other end is a non-polar hydrophobic group. 2. The active molecules can disrupt the surface tension of water. When soap molecules enter the water, the polar hydrophilic part breaks the attraction between water molecules, reducing the surface tension of water and allowing water molecules to spread evenly on the treated glass surface, forming a water film that adheres to the glass. 3. The more rainwater hits the glass, the larger the water film becomes, maintaining the glass's high clarity at all times.
I've tried countless methods to prevent window fogging, and now my favorite is the car anti-fog spray. This stuff creates a layer on the glass that prevents moisture from gathering. I used to constantly wipe my windshield in winter, but now I just spray once before driving my kids to school in the morning, and it stays fog-free all day. Make sure to choose alcohol-free formulas though, or they'll damage your window tint. Another secret weapon is rubbing the glass with potatoes - cut a raw potato and wipe the interior surface, the starch forms a natural anti-fog layer. It's completely free and eco-friendly, though the effect doesn't last as long. Oh, and high humidity inside the car also causes fogging - keeping a few desiccant packs on the dashboard works wonders.
I've been thinking about defogging car windows for years, and the best solution is automotive-specific anti-fog spray. A bottle costs just over ten yuan and lasts half a year—spray it on, wipe evenly with a dry cloth to form a protective film that prevents moisture condensation. For emergencies, wiping the glass with diluted dish soap (1:10 ratio) works well too. When driving, avoid pointing the AC directly at the windows; using external air circulation helps reduce temperature differences. Foggy side mirrors are even more dangerous—I found that applying car wax solves this. Keep a suede cloth in the car; in urgent situations, breathing on the glass and wiping it clears fog instantly, far better than paper towels.
