Appliation : To make the headlights brighter and more perfect, please read our instructions carefully. Note that this product should not be exposed to the sun and should be kept in the shade. During construction, please wear a mask, not to smell, to smoke, or to eat! This product forbid pregnant woman children and the elderly to contact! Description: 1. Clean the surface of the lamp with clean towel, and put 2-3 layers of fine paper on the periphery of the headlights to prevent the car paint from being wrong polished. Sandpaper introduction: 150 #-180 # severe cracks and scratches are used (generally mild yellow or slightly cracked, do not use) 240# Slightly cracked or yellowish to use (slightly cracked or peeling) 320# slightly yellowing or dealing with the sand paper mark left on 240 # (manual polishing can be directly used by 320# manual grinding) 500 # mainly deals with the sandpaper left by 320 #. 800 # mainly deals with the sand paper mark of 500 #. After polishing, it can be directly used for fumigation repair. If you want to fix it better. You can use 1200 # for a simple grind, but remember, you can use 1500 # or 2000 # to fine polish the headlights, because the polishing is too smooth and the brightness is not high enough. 2. There are two main methods for the polishing of headlamps. One is the grinding of the machine, and the another way is the manual polishing. In this case, we give you a brief introduction to the manual polishing method.