Ok I have probably a dumb question but I have never had highlights done...only single process. So basically every couple months either I go or touch up the roots myslef. I lighten my color a shade or 2 from my natural...when I touch up the roots it also covers all the grey.

SO...... I was thinking about doing highlights to change it up a bit but I worry about not only the dark roots coming in but the greys. How does that get covered up???