No joking aside: The spray seems an unpleasant side effect of reaction with moisture or other substances to have. Anyway, I had the excavated described bravely by my better half on the cup holder. But that was about it. To rainspots I can not say much. But the effect appears to occur immediately after cleaning only in the period. To this day, I still can not discover new tracks.
Cockpit sprays with a matt finish but apparently dominate the market and rightly so. The usual cleaner with initially described effect so I would not use anyway - This spray however already.
A star deduction for the brave and another for the price.