My mum booked me in for highlights when I was in my teens and struggling with my confidence and I've just always gone back and got more highlights without thinking about it much. But I've had it done so many times I do wonder if just getting it coloured all over would be a quicker and possibly cheaper way of getting the same result? And is it any less safe? I've had cancer and I know hair dye has toxic stuff in it so maybe it's better not to have it painted on to your scalp? Or maybe it's for such a short time it makes no difference?