My car is dark blue. When using Fertan there, you can already see something that you have painted. Because the rust Converter turns black after some time. ... So paint pen over it yet ... so one should indeed make the.
But in my city bike (usually black) that works really great. And you would have only just with a clearcoat paint pen over it. Because color drops that do not on.
To the effect ... definitely the red rust is gone for visually. And if you stick to the subsequent painting, then you have also determined some time resting in front of it (or maybe forever ???).
Fertan Rust Converter is a good solution for all small bodies (stone chips etc.). So highly recommended for little quirks.