If you need a root touchup, would that be partial highlights or full highlights?

That depends, do you have highlights and they're growing out?


Or is it a full head dye job that's growing out.





It is not easy to fix roots from a highlight, you should either re-dye your whole head, or just add more highlights to it so the new hair blends in.





If it was a full head dye job, just fix all the dark hair that has grown in.