Concentrated product for touchless wash of passenger cars and trucks. It does not damage aluminum, nickel-plated surfaces and other coatings made of alloys of non-ferrous metals. It comprises anti-corrosive additives. Before application, dilute with water, following the calculation 10-20 g/l for a foam generator (25, 50, 100 l) or 150-300g for a foam cannon (1 l).