Our Car Light Repair Liquid contains resin, solvent, and additives. It can efficiently clean car lights, eliminating scratches, yellowing, blurring, and oxidation from headlight restorers. Its usage is simple: first apply tape around the light, grind with sandpaper for 5 minutes, then grind with a polishing pad. After drying with a dust-free cloth, wait for it to completely dry before dropping repair crystal on the cloth. Finally, wipe off foam with a sponge. After use, reduce damage to the car light surface from foreign objects, maintain and keep the lights looking brand new