Per the on-screen captions, a 320-grit piece of sandpaper should then be followed by a 400-grit piece of sandpaper. Then, with soap and water used intermittently on the headlight, there’s a ...

After the first coat has dried for 24 hours, remove small blemishes by wet-sanding with 400-grit sandpaper mounted to a sanding block. Dip the sandpaper in water and use circular strokes to remove ...