Exhaust Manifold Paint?

It's not paint but works pretty well.
calyx manifold dressing. I use it on my car and other than needing to reapply sometimes I have had pretty good success with it. re application is done with an old tooth brush or the wifes' just don't get caught..

Manifolds look like raw cast iron. I will say that it does have a smell to it until it has heat cured to the manifold.

Just my 2C