How can I make my hair temporarily black?

Asked by AshLeigh (16340) October 15th, 2015 from iPhone

Hi guys! It’s been a while.

So, my friends birthday is on Sunday and we are all dressing up as our favorite Adventure Time Characters. I’ve chosen Marceline the Vampire Queen for obvious reasons. So, I need to find a way to make my hair black for only one night. I tried some of the black hair spray that you can get at Halloween time, but it doesn’t really work if you already have dark hair. All it did was leave my hair the color it already is (medium/dark brown) and make it feel really gross. Any ideas?

Thanks guys!