Hair color too dark and won't fade

> I have naturally dark brown hair that has been> highlighted several times. I decided I wanted to> gradually go back to my natural color so I had my hair> dresser color it for me. She decided that she wanted> to put a stain on it instead of permanent color> because of the condition of my hair. I'm not sure if> it was a demi or semi-permanent color, but anyway it> is way too dark now. I have washed my hair about six> times in three days to try to fade it and it won't do> a thing. I even tried dishwashing liquid twice (that's> what my hairdresser recommended to start the fading> process) and it hasn't done a thing. Does anyone have> any suggestions as to what I can use that won't make> it brassy looking?Kim-Have tried using a dandruff shampoo? My hair was too dark once and someone suggested it and it worked. It didn't get it exactly the color that I wanted, but it did take a lot of the color out. Hope this helps!~k