Vallejo Red Oxide paste? Yeah i have it and have used it. Depends what effect you're going for. I wanted a red dirt/rock alien planet landscape for my necrons, so I added some cork bits to represent rocks, added a sprue bit to resemble a dead tree etc. It's worth mentioning that VMA Fire Red is ~100% match to the Vallejo Oxid paste which can be useful. If you prefer the texture of one of the other things below you can use that, then paint it fire red too.
It's fine to use as is if that's the effect you want. If you want another effect, by all means add other stuff to it.
I took pics a while ago of some vallejo textures wet, dry and painted/shaded, might be useful to you.