How Long Does It Take for Scratched Primer to Rust?

[HeidiDella]

If the primer is scratched, rust can appear in about one and a half months if it rains. Without rain, rust may take approximately three to five months to develop. It is recommended to address the issue within a month. A simple method to deal with scratched primer is to use regular toothpaste. Gently apply the toothpaste in a circular motion over the scratch. Remember to reapply after rain or washing the car. This method can generally reduce the visibility of the scratch and act as a temporary barrier to prevent rust, especially for white car paint. If the scratched area is small and there is no deformation or dent, you can purchase paint matching your car's color and apply it yourself according to the instructions.