I have had a dark cool brown put on my hair in October last year and it has obviously faded since then to a light mousse kind of brown. I have an appointment at the hairdressers this week and wanted to change it up a little and go for something like this picture. However, if my hair would have to be bleached and left for a couple of days before being dyed to get this look I would need to go with my normal brown until a later date due to work. Does anyone have any idea what the process for this would be?