Why does pearl white touch-up paint turn yellow after one month?

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The reasons why pearl white touch-up paint turns yellow after one month are as follows: Issues with the paint itself: On one hand, there may be inherent problems with the paint. If this is the case, you can go back to the place where the touch-up was done and request a repaint, and even seek compensation if necessary. Poor touch-up technique: On the other hand, it could be due to improper operation by the technician during the touch-up process. This might involve spraying the pearl layer before the white base coat has dried, or applying the clear coat before the pearl layer is properly set. In such cases, you can only seek after-sales service from the paint shop. Maintenance: If color differences appear, polishing can help restore the car's original color. Regular car paint maintenance is also important—avoid prolonged exposure to sunlight and rain, and park the car in a garage if possible to slow down the yellowing process.