Hair colour removal using sulphur based product
I have been dying my hair for about 11 years and my natural colour is auburn. I have bleach blonde foils in the top half of my hair and the underneath is a brown permanent hair dye. I am wishing to go back to my natural colour without having to have all my hair cut off or grow it out. I am looking for a treatment that would strip all the dye out of my hair. Is this possible. I saw Extreme makeover on TV the other day and they stripped some lady's hair colour with something that contained sulphur. Any ideas on what that is??