How To Make Dirty Blonde Hair Lighter?

I have dirty blond/gold blond hair and want it to be lighter. But I don't want to dye it or get highlights. I just don't like the idea. I've heard of a lemon juice trick. Is this safe? If you know anything about it could you tell me what you do with it?:) I've heard of using SunSilk Shampoo for blondes or the John Freida stuff for blondes. Do these really work? Thanks :)