For a few years now I have had my hair bleached balayage style. Before that I used to dye it dark brown using box dye.
Every time I go to the hair dressers it costs me £150ish and it doesn't look much different. Last time they gave me a trainee and it's....not awful but not great. I thought she would be supervised but she wasn't and it didn't cost much less than having a more experienced person. I'm also struggling for time to get it done which means I'm walking round with my grey roots hanging out longer than I would like whereas with a box dye I could just do it when I can.
How bad would it be if i just got a brown box dye and just dyed the whole lot?