The Harm of Rain Repellent to Glass?
2 Answers
No harm. Here is the relevant introduction: The function of rain repellent is to form a nano-film on the glass, which has specific water-repellent properties and can effectively prevent the formation of a water film that causes blurred vision. Generally, there are no side effects. Rain repellent has the following advantages: 1. Protective performance: It not only provides 100% anti-fog effect on car glass but also prevents aging and oxidation. 2. Environmental performance: Its material is an eco-friendly product, non-toxic, odorless, non-corrosive, and highly concentrated, requiring only 2 milliliters per square meter. 3. Cleaning performance: It can clean stains on the glass surface, making the glass more transparent and brighter. 4. Anti-freezing performance: It can significantly lower the freezing point of liquids, thereby providing an anti-freezing effect and quickly dissolving frost.
As someone who frequently deals with car detailing, I'd like to discuss the potential drawbacks of rain repellents. While they allow rainwater to slide off quickly, if the product contains impure ingredients or is improperly applied, the glass surface may become corroded, developing fine scratches or a hazy layer that affects nighttime visibility. Over time, the glass's transparency diminishes, and wiper operation may leave annoying streaks. What concerns me more is that some cheap rain repellents contain acidic substances that can erode the glass's outer protective coating, especially accelerating aging under high temperatures or intense sunlight. I recommend regularly cleaning the glass and choosing high-quality products, such as silicone- or fluorine-based rain repellents, to minimize these risks.
