After looking at the photos, I wouldn't sweat it. I had a similar fork on my German MTB.

In Cairo, you're going to be getting a lot of sand/dust onto the exposed stanchion and those kind of effects will happen with less expensive suspension forks (my Rock Shox Dart 3 did the same). You may want to look at the point where the stanchion meets the seal and ensure that there's no grime/dirt/sand/dust in there in order to prevent constant rubbing.

Other than that, just ride and use them up, that's about all you can do. When they're worn out replace them with a better quality fork. But, it will take quite a while to wear them out.