Hi geeks please help me as I'm having panic attacks right now (metaphorically speaking!) does nouvatan only have a six month shelf life? I had not realised this and used it on a client this morning, (purchased and opened solution in July 2011). I read on the side of the bottle after using that it's good for 6 months! Is this true? What can happen if used after 10 months as I have? Not heard anything from girl - yet, but im seriously panicked! :-/