What is the solution for white car paint scratches revealing black base?

[Arabella]

The solution for white car paint scratches revealing black base is to perform touch-up painting. The touch-up painting method is as follows: 1. Thoroughly clean the surface to be repaired before starting; 2. Use alcohol to remove wax film, moisture, oil stains and rust from the repair area to enhance paint adhesion; 3. Shake the touch-up pen vigorously before use until you hear the mixing ball rattling (shake at least 30 times); 4. Open the touch-up pen cap while holding it upright to prevent paint spillage; 5. For deeper scratches, apply repeatedly with the brush; 6. The touched-up area may appear uneven - after the paint dries completely, use 2000-grit wet sandpaper to smooth the surface until it's level with the surrounding area.