Highlights to all over color?

I have highlights on a dyed dark brown base so overall it looks like a mix of medium and light brown. Now, I'd like to medium blonde all over and do root touchups myself, I was wondering if I could lighten my hair with a lightener after doing a color removal? The last time I did my highlights was in May and I dyed my hair dark brown in earlier this year in Jan. My hair is quite healthy but dry. Any feedback would be great!

i was thinking about going meduim blonde too!

my hair is dark brown will mine go orange???

Your hair shouldnt be orange if you lighten enough.I am also a natural medium brown.And I successfully lightened without orange.And believe me I have alot of red undertones.You need to lighten to to the yellow stage.You dont have to lighten all the way to pale yellow for medium blonde.Just make sure all the orange is out before you tone.I toned with #8 medium ash blonde.The ash should help nuetralize any brassy or orange tones that might still be lurking around.I agree highlights can look good.But most celebs who get their hair lightened from brown colors have they're base color bumped up to dark blonde or lighter depending on how light they want they're hair and then highlighted with a lighter color.Thats how they get such a natura looking blonde.The blonde on brown can look good too,but its more of an edgy lookIMO.Both can look good though.I guess Its all about what kind of look your going for.