I use a clear coat that came with my new car. It came in a small jar with a little brush. It has UV hardners, stays perfectly clear and white and is though as hell. I use it on the pearl in combination with a regular needle and let me tell you. The result looks 10 times better than any WM pearl I've ever een. The WM pearls look way to greenish compared to the hour markers and hands, and none has a perfect coat applied (I have some so I know.