I have just dyed my hair. I haven't done it for months and it got to the point that half my hair was mousey brown the other half black.
Now I usually use 2 packs of hair dye. I only had one so only did my roots thinking that it would al least make my roots match my tips.
BOY WAS I WRONG 
I look like brown and black stripy jumper
I am going out to buy more dye this-afternoon.
Anyone want to share their hair dye disasters before I face the hordes of Saturday shoppers?