polyWatch Plastic Polish offers a simple and reliable solution for removing scratches from plastic watch crystal. The innovative plastic deformation technology, which slightly softens the clear lacquer on the crystal filling in any areas of damage, polishes away scratches and imperfections at the blink of an eye. Practical: All-inclusive kit contains everything you need for use.1. Put some polyWatch on the middle of the watch glass.2. Using the enclosed polishing cloth or a piece of cotton wool, polish the scratched areas under strong pressure for 2-3 minutes. Repeat treatment for deep scratches.