I've noticed some rail dust on my new white car, and I want to get it all off when I detail it and apply a good LSP. I have been looking at going with Iron X, and I was wondering how safe is it? My car has all kinds of chrome plastic trim, and I don't want it or anything else on my new car to get messed up. Are there any places that Iron X should not come in contact, any precautions I should take when using it?