Hey guys, is it possible to mix the Schwarzkopf Ihora Royal developer (9%) with the Mellor & Russell simply bright hair colours since the airport secruity got rid of the original developers which was included in the Mellor&Russell hair colour pack
Girls, Hair dyeing advice?
What Girls Said 1
I would think if it's the same volume developer it shouldn't be a problem other than mixing ratio might be a little off. Good luck!0
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