Easy to use, just sand, clean the headlights and cover the lights with repair liquid for a new look that will last for years. The 200 ml headlight repair fluid can repair about 16 - 20 headlights. It can quickly form a new UV coating on the surface of the headlight to help shield against yellowing and oxidation, it with rubber elasticity, good light transmittance, high surface hardness and not easy to scratch.