Is it suede or Lamonta? Think you'll find that suede is a natural product and lamonta is man made. I personnally would check any oil based product on it first. I have used Vanish power shot on my roof lining before now, brilliant stuff, works on carpets as well.
You can get Vanish from any supermarket or local store. It's in pink can. I used it on my Tam door cards to get rid of the water marks, i brushed it in with a suede brush and then hoovered to excess water off.