Window glass sealing

Hello everyone!

I am considering sealing the plastic windows, or especially the glass, immediately after installation (or if possible even before???). Have you done this before? Can you recommend a product? My goal is to possibly extend the cleaning intervals of the windows.

Do you have any other experience in the sanitary sector? Especially shower enclosures tend to look unpleasant quickly. Can you recommend anything there?

Regards

Well, glass shower enclosures usually have glass squeegees hanging on a hook for most people, just wipe them down quickly after showering, done.... For the windows, a nano-coating comes to mind spontaneously, but even here... is it really necessary?