I already made rainbow hair ages agooo, with 7 colors, and then again like a month ago with 6 colors (no red)
i think its also fun with my shorter hair :3
How I dyed my green wig to blue without dye
...mixing black and red...
Bleaching your hair that wont damage it much.
TRY IT! :D
Save loads of money (and most probably do it better than a salon)