If you have exposed rubbers or black plastic on and around the windscreen, it might be a good idea to get a light adhesive tape and mask these areas off, especially if you know you're a bit messy! Reason is that the abrasive in the Metal Polish can leave white stains if it gets on them. However, if you don't mask up and get white marks, they are easy to clean off with a gentle scrub using a soft bristle brush and our Vinyl Revival. Finish by wiping the areas clean with a microfibre cloth like the Dirty Deeds.