How to Deal with Poor Visibility in Rearview Mirrors Due to Rain?

[LaLondon]

When rearview mirrors are hard to see clearly in rainy weather, you can use methods such as heated rearview mirrors, installing rain deflectors, applying specialized rain repellent, rubbing soap, or using insect repellent. Below are some relevant methods for improving rearview mirror visibility during rain: 1. Using soap or detergent cleaners: Cleaners contain surfactants, whose hydrophobic groups physically repel water, preventing water droplets from forming. The method is simple: apply or spray soapy water or detergent water on the rearview mirror and let it dry. Although this method is very convenient, its effect is short-lived, lasting only about 2 days. 2. Waxing the rearview mirror: When water is on a waxed surface, the internal cohesion of water exceeds its adhesion, preventing water droplets from forming, similar to the principle of lotus leaves. Although waxing is also simple, wax is highly affected by temperature. If not done properly, it can impair visibility, so this method is not commonly used.