Glass protection window / shower

Hello everyone,

what do you think about treating the windows with a care product, I am thinking of a water-repellent effect? Does something like that make sense for windows? Especially for south-facing windows that get a lot of sun? In my idea, I treat the windows with it and then when it rains, the dirt is washed down. Does that actually work like that?

I am thinking the same for the shower. I would like to treat the inside of the glass so that the water droplets flow off more easily/better and do not stick until they evaporate and leave lime stains.

There are countless care products for cars, but I don’t know how useful they really are as I have never used them. I am also not sure how the care products react to warm/hot water in the shower?

Has anyone tried this before?

Nothing at all, as long as they are based on nanoparticles. That stuff is harmful and should be banned in my opinion.

Best regards briefly

We also tried it at home on the glass shower wall - the work of scraping off the water afterwards with a scraper is unavoidable. However, it must be said that it was much easier to remove the water droplets than without using the product.