Using this touch up paint kit is easy. First, clean the area you want to repair on your car thoroughly to remove dirt and grease. Then, shake the paint bottle well. Apply the paint carefully to the small scratches, stone chips, or paint imperfections, following the instructions on the bottle. If you've chosen the Clear Coat Kit, apply the clear coat after the paint has dried. As for precautions, remember that the color might vary a bit from your car's actual paint due to paint fading. Don't apply the paint in extremely hot or cold weather. For maintenance, keep the paint bottle tightly closed when not in use. Store it in a cool, dry place away from direct sunlight. If you have any problems during the process, our professional customer service team is ready to help.