After using autoglym polar blast pre-wash soaps (neutral ph if I remember correctly) and feral (alkaline), I tried this product. Initially hesitant because of its ph, but very satisfied! Initially for wheel rims and tires, after applying K2 roton pro, spraying with Vb hand foam gun. It removes dirt easily, a little scrubbing with a brush and rinsing! It leaves the body almost clean without contact and remains hydrophobic due to wax application and after 5-6 washes. In the end, apply a quick wax product or the recommended koch chemie PW!!

P.S. Bugs and other insects stuck on the bumper... nothing remains!