Most Helpful Girl
You might get a tiny change of color - depending on how light your hair is - but it pretty much won't work without the bleach. I have kind of an 'ombre' style; and yes, it had to be bleached.
I'd suggest going to a salon to get it done, there, they tend to mix the bleach in with any color, so you're not stripping your hair right down. Plus they know what they're doing - they'll be able to tell you what condition your hair's in and whether it would be okay with the bleach.