8 months ago I had my (naturally very dark) hair dyed blonde with heavy highlights. After a couple of weeks I decided I hated it 
and threw a box of very dark dye over it. Fast forward to end of last year and I had blonde highlights put back in, more in January and really heavy blonde highlights last week.
Problem is, now I hate it. The ends are dry and I fear it looks cheap (it certainly wasnt). What can I do to make it look better? I'm not sure dying it back to dark is necessarily the best idea, I don't want to end up bald!