I've been dying my hair dark brown (but it's pretty much black) for 18 months. I hadn't been dying my hair before that. It's too dark, and because my natural hair colour is dark blonde it's too hard to keep up with. It needs redoing every 3 weeks and because I can't wear my glasses I always end up missing a bit!
I used ColourB4 for Dark Hair last night, followed the instructions to the letter. It's taken the colour half out of my crown, it's gone quite a nice light brown/auburny colour which I like, but the other 3/4s of my hair are still black :(. I very rarely use hair straighteners, which definitely aren't near 230c, only my hair dryer which is not that hot. Do you think it would be worth trying the ColourB4 again or just admitting defeat and dying my hair the same colour again? :(