When you buy professional dyes they usually come in numbered tubes which contain about 6 applications. That's the colour part and then you buy the developer separately. I was suggesting that it might come out a deeper shade if you used a bit more of the colour than required so there's more pigment in your dye. I'm not sure if it would work but it might be worth a try.

Jude: Ah, now I understand, thanks for clarifying that

Chyldofmetal: I'm thinking maybe that is what happened(Though I don't understand it). My fringe, which was already black/brown turned PITCH black, along with most of my longer hair in the back, except for the one bleached/green streak that I had.

looks awesome, a bit dark but good dark.