Headlight restoration is effective in correcting common issues like fogging, discoloration, and surface scratches, restoring clarity and brightness. However, it cannot fix deep cracks or large damage. While the process can smooth out minor scratches and improve the overall appearance of headlights, cracks often require more extensive repairs or even full replacement. For damaged headlights, it’s essential to assess whether restoration is the right solution or if replacement is necessary for optimal safety and performance.