Quoting Beatrix Kiddo:" I had my hair dyed darker than yours and I got to a very light blonde...eventually. I had it bleached ... [snip!] ... can take quite a bit of abuse but I ended up just cutting 6 inches off recently. If you do it gradually it should be fine."
Quoting Beatrix Kiddo:" <blockquote><b>Quoting Andreahhh:</b>" Yeah, I'm not in a rush to get it light blonde, ... [snip!] ... its ever been, halfway down my back. Now its still past my shoulders but I still miss it. Stupid me and my impatience...."