Mid 40s, very dark hair that is very grey on top. I have had it bleached blonde for 4 years now which has been a mission in itself. The colour is a nice cool blonde, but my hair is in tatters. It's awful. I've not had any bleach for 5 months now and will keep getting trims to cut it out.
I want to go dark again for a few years, until I'm properly white. I know my whites will shine through after a week, but I can colour them in. Any advice? Do I need to cut all the bleach out first? Can I dye on top of it?