Is Car Rain Repellent Useful?
3 Answers
Car rain repellent is useful. It utilizes the hydrophobic principle of nanomaterials to prevent rainwater from forming a film on the car glass surface, ensuring that the driver's vision is no longer affected by the rain film. This significantly improves driving comfort and safety during rainy conditions or on wet road sections. Car rain repellent should be used before it rains, and the application method is as follows: 1. Clean the dust and stains on the car glass surface and keep the glass dry; 2. Spray the rain repellent on the glass surface and spread it evenly to avoid rain streaks after the rain; 3. After 5 to 10 minutes of application, let the glass dry and then wipe it with a tissue until the glass becomes shiny.
I've tried rain repellent on my car before, and honestly, the effect was quite noticeable. When it rained, I found that the water would bead up into small droplets on the windshield, and at slightly higher speeds, they would just slide right off, so I hardly needed to use the wipers. Especially when driving at night on the highway, visibility was much clearer—no more blurry mess like with regular glass. However, you have to pick a high-quality product when buying; some cheap ones wear off after just a few days, and you must thoroughly clean the glass before application. I make it a habit to reapply every two months—it works best right before the summer rainy season, but the effect is less impressive in winter. Also, be careful not to spray too much, as it can leave a greasy residue. Overall, it's a practical little item worth keeping in your car.
I place great importance on driving safety in rainy conditions, and rain repellents can indeed be helpful. What I fear most when driving is the wipers not clearing rainwater effectively during heavy downpours. After applying rain repellent, the water rolls off automatically, significantly improving visibility. However, it’s not a complete replacement for wipers—during extreme storms, you still need to use them together. When choosing a product, pay special attention to water repellency and durability. In my experience, fluorine-based formulas typically last about a month. It’s best to apply the product in a shaded area and avoid dusty environments to prevent streaking on the coating. Extra care should be taken when treating the side mirrors, as this area is crucial for lane-changing safety. Price-wise, it’s quite affordable—a good bottle costs just a few dozen yuan, and the peace of mind it brings is well worth it.
