I bought this wheel cleaner to clean my alloy wheels, which had some brown stain on it which i couldn't wash off with soap. after applying, the brown stuff came right off, which was awesome. I followed the instruction on the can where it says leave it for 30 seconds and then wipe off. I wiped it off, and then start to notice white stains... so i washed it, and wiped and washed and etc, the white stains comes back once the wheel dries. Since the solution of wheel cleaner is alkaline, I tried some turp to nuetrualise it, it got most of it off, but if u look closerly, u can still see the white stains. Anything else i can try to get rid of it? thanks~!