I have a pair of Red Wings 4408 Oxford shoes. They are safety shoes with a steel toe.

I'm pretty rough with them where I work, and over the past year I've nicked and cut both of them pretty bad in the toe region.

I've tried filling these in with shoe polish and polishing it all over, but it never seems to stay in the nicks and a horsehair brush always removes it. Moreover, the scuffed/scratched/roughened leather never seems to shine.

Please ignore the horsehair in this photo... I didn't notice it at all when I took it.