permanent hair colour blue

Do I have to wash out semi-permanent hair dye before permanently dying it?
My hair is naturally really dark brown, nearly black, and at the beginning of summer, I dyed it two colours: red permanent streaks and semi-permanent blue. It’s getting hard to pick out outfits that match black, red and blue hair (haha) so I’m going to dye it black again. Before I dyed the blue, I had to bleach it. Not for the red because it was specifically for dark hair. What will happen if I don’t wash out the semi-permanent blue before I dye it black again?
I don’t think it will really matter that much because (if i understood correctly) you will be dying over it. It might be a good idea just to be safe but all in all whats the worse that could happen? I’ve done that before and my hair was fine. Good luck!
Manic Panic Hair Dye & Information.
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Jerome Russell Semi Permanent Punky Colour Hair Cream 3.5oz Blue Black# 1444 $7.90 The original, semi-permanent, intense hair colouring cream. Vegetable based conditioning cream, leaves hair vivid and smooth. Available in 26 colors…. |
