I (stupidly) dyed my hair a very slightly different shade of box red hair dye as they didnt have my shade. I have done this before where I got a ever so slightly different shade of red from the same brand and it turned out no noticeable difference. This time however, it is bright pinkish almost. To clarify, I have very dark brown/black hair and box red dye just adds a subtle red tint to my hair normally. It is now noticeably more red at the roots (less so through the shafts of the hair) as I concentrated the applicated at roots for the greys.
Help please?