You proudly look at the sparkling glass, but after an hour it is covered with dull stripes, as if an invisible hooligan had laughed at you. Sound familiar?
It turns out it's all about the water you use.
Yes, that same warm liquid that seems ideal for cleaning is the main enemy of transparency.

The reason is simple: it evaporates quickly, leaving behind mineral deposits and traces of detergent.
But cold water acts as a “freezer” for dirt – it doesn’t give it a chance to stick to the surface.
A pro tip: Fill a spray bottle with ice water, add a tablespoon of vinegar per quart, and shake. Spray the mixture onto the window, wait a minute until the dirt starts to "flake off," then run a rubber squeegee down the window as if you were scraping a sticker off the glass.
Finish the process with a dry microfiber and there you have it, a mirror shine that will have your neighbors knocking on your door asking, “Where did you buy those windows?”
But that's not all. If there are fingerprints or greasy stains on the glass (especially in the kitchen), wipe them with half a raw potato.
The starch neutralizes fat, and the acids in the juice dissolve even old stains.
And to combat dust after washing, use an antistatic hair spray - spray a little on a rag and walk along the windowsill. The dust will not settle for at least a week.
And remember: never wash windows on a sunny day! Drops will dry faster than you can wipe them off, and streaks are guaranteed.
Wait for cloudy weather - then your glasses will be perfect.