I just used it and it took all the red out my hair I am so happy. Even the highlights I had put in my hair in July of 2007 are back which is okay. I don't know how much my hair is lightened because my hair is still wet I have conditioner in my hair I will post later how much it lightened my hair. I didn't recolor as I plan to wait a week to let my hair rest. I will use a protein filler and i plan to dye it a dark blonde or medium ash blonde with a 30 volume developer. I am just glad that the red is gone I will never dye my hair red again it is really hard to get out.