I followed the instructions and let the duster sit face down on some newspapers for 48 hours. It did leave little stains on the newspaper as expected. I then lightly "dusted" my car. The car was cool to the touch. The duster left tiny red flakes of brush all over the car. Despite how much I shook the duster, they were spreading with each use. The duster also left streaks in the finish. I was disappointed and used a soft detail cloth to clean up the mess this duster created. The duster appears and feels well made. Returned.