Perfect-it III - Ultimate Shine Liquid - Blue cap - 1 L Perfect It III blue cap is a high-performance polishing liquid designed to remove spiral treatment marks and other minor surface imperfections. It removes all traces of polish and gives an optimum shine to painted surfaces. Ideal for polishing marine paints. Note: it can also be applied by hand. What we like about it: it's easy to use and easy to clean. Perfect It by 3M is a range of products designed for all kinds of paint touch-up and restoration work. Depending on the colour code, they are effective for treating traces of oxidation, surface scratches, wash scratches, etc.