What does rainproof windshield washer fluid mean?

[DiQuinn]

Here is relevant information about automotive glass rain repellent: 1. Principle of rain repellent: Automotive glass rain repellent forms a nano protective layer on the glass surface. This protective layer has a hydrophobic effect, causing rainwater to automatically contract into round droplets upon contact with the glass surface and slide off by itself; 2. Reason for using rain repellent: Although high-end automotive glass comes with a rain-repellent coating from the factory, this coating wears off quickly under continuous wiper friction, resulting in rainwater sticking to the glass; 3. Function of rain repellent: The rain repellent effectively solves this issue by altering the properties of the glass surface from hydrophilic to hydrophobic, thereby achieving the purpose of rain prevention. The effect of such rain repellent is quite long-lasting.