Will the touch-up paint crack over time?

[DeEmilio]

The main consideration is how the touch-up is done. If there is no sanding or any treatment, it will peel off quickly. If it undergoes sanding, spraying, and varnishing, it will not be affected for 5 years. Below are relevant details: 1. Conditions: If the touch-up technique is good, the color matching is reasonable, and the paint thickness is appropriate, the paint will not peel or discolor. Touch-up paint that has not undergone high-temperature baking—even if it goes through the baking process, the temperature is not as high as the factory's—will not be as durable as the original factory paint, so it may need to be reapplied if it peels. 2. Additional information: Under the exposure of the sun's ultraviolet rays, the paint film continuously evaporates oil into the air to protect itself. Over time, this can cause excessive loss of oil from the paint surface. The brightness and depth of the paint surface are greatly reduced, causing the paint to slowly turn white, forming an oxidation layer and shortening the lifespan of the car paint.