Car paint: reasons for color penetration

Car paint show-through refers to the color of the original car paint seeping out of the newly painted surface, causing the color of the topcoat to change. Because:

1. The old paint film was not sealed before painting;

2. The old paint film has not been cleaned and soluble dye remains

3. The pigments of the original car paint and the thinner of the new paint react and dissolve;

It is best to spray a small piece of new paint on the old paint film for a small experiment. If there is color show-through, sealing and isolation work must be done. If color show-through has occurred, it is recommended to re-spray after polishing.