Shiny, streak-free glass in less than 5 minutes with this powerful

Then add one cup of ethanol and another cup of vinegar.

Pour everything into a spray bottle  .

Shake  and then  spray on the windows

Gently rub  off the dirt with newspaper until the surface shines again. No great effort is required, the result is visible after the first pass.

If the materials are too dirty, use a microfiber cloth before moving on to newspaper.