Okay go to a hairdressers quick smart!
I had a fire truck affair with mine like a year ago and put more dye to cover a bad job, didn't work, put more and now my hair is so fucked that if I wasn't stubborn I would listen to the advice given and chop a whole load of it off. Those home dye affairs really mess with your hair.

I suggest a Redken Masque. I forget the proper name but it is wonderfulous. Costs a bomb but makes hair non straw like. Cheapo way is to use mayo... but not anywhere near the roots. And you'll need to shampoo three times to stop smelling like egg mayonaise.

I was so temepted to say go black so you could go all Samara like.