How to use waterproof sandpaper?

To use waterproof sandpaper, start by wetting the surface you want to sand. This helps reduce dust and debris and prevents scratches. Take a piece of waterproof sandpaper and hold it under running water or soak it in a container of water. Then, sand with light pressure in a steady motion, ensuring you keep the sandpaper wet regularly. This prolongs the lifespan of the sandpaper and ensures a better result. After sanding, rinse the surface and let it dry for an optimal finish.