Will exposed primer rust?

[VonAngela]

Exposed car primer will rust over time. 1. Exposed primer: If after a "collision", the primer or paint that is significantly different from the exterior paint (sometimes the metal part can be seen) is clearly visible, then touch-up painting is necessary. If left untreated for too long, it may cause internal "rusting" and expand the "repair area". 2. Plastic parts: If the collision or scratch occurs on plastic parts such as the front and rear bumpers of certain models, touch-up painting can be done if personal aesthetics are a concern. However, for small areas (not affecting overall appearance) or situations that can be handled by polishing, touch-up painting is unnecessary, and there is no risk of rust (plastic parts).