Dirty windscreens don't just look messy - they also present a significant safety risk. Even a slight smear film on the windscreen can cause several seconds "blind driving".
A special windscreen cleaner can remove the typical windscreen grime quickly and without leaving streaks.
Important:
Think about the windscreen washer unit too - in winter the best bet is SONAX Antifreeze & Clear View, for the warmer seasons SONAX Clear View 1:100 provides clear vision.
Spray on XTREME Glass Clear
SONAX XTREME Glass Clear is designed to remove smear films, stuck on dust, or nicotine stains without leaving streaks.
Spray onto windscreens and mirrors with the pump sprayer, allow to work in briefly, then wipe off with paper towels or Car Care Cloth.
Let the side windows down a little so that you can clean the dirty window edges.