Don't do it. Just don't. I went in for a re-touch of my highlights and left with orange and yellow hair. The guy who did it was so unapologetic that, that alone was enough to never return. Management had me go back and have another person attempt to fix but she couldn't and I was charged. They just don't have enough knowledge about color....at least it seems. I went to someone else at another salon to fix their error. You've been warned.