Steps: Repair about 90% of the scratches, please follow the steps to operate correctly. 1. Shake the product for 10 seconds before use, and twist the pen up, otherwise it may out. 2. Compare the color of the car before applying it, and then decide whether to apply scratches. 3. Wipe the scratches cleanly, and rust and uneven areas should be smoothed. 4. Cover the non-scratched parts with tape to avoid sanding. The sandpaper is soaked in water and softened, then sanded to a smooth with very little strength. (If there is no unevenness and rust, this step can be ignored) 5. Do not apply it back and forth. It can be applied from left to right or from top to bottom. It can only be applied once. If it can't be covered, it can be applied again after half an hour. Generally, the 3~5 layers can completely cover the scratches, and the deeper scratches need to be applied a few times. 6. After the repair, basically no scratches are found. Packing List: 1* repair pen