A few of the salons I've called have all said that their hair color removers are very potent, and some even just completely bleach the hair. Are there any products I can use at home to remove a semi-permanent color that was added to bleached blonde hair (or something that at least removes it a couple of shades lighter)? I then want to go get a new color, but right now I just don't think I can add more color over this existing color, I think it's too dark, I have to have some of it removed, but I do not want to totally bleach it out, because that's too damaging! If there isn't anything at home, is there a gentle color remover I can buy at a store, something cheap? And what will it do to my almost one inch roots that have already grown back?

Thanks.