Just been to salon where I have been getting a single colour done a few times. Discussed highlights and as I have dark hair, mentioned "caramel" and subtle. I've ended up with white blond stripes through the top of my head, and I'm going to a special event on Friday night, and I've no child free moment in the next three days to go back to the salon. What should I do? I want to dye the whole lot,to darken the white stripes but I don't know if that will make them go a strange colour, or if I need to wait 24 hours? Any advice would be very welcome. I am dreading the school run and trying to find a hat ....