Blue and black to dark blonde.. Sticking point help!

You need to leave about 4 weeks between bleaching, so please don't bleach again. You've already double processed using bleach and a permanent dye in one day. That's bad. Many people say their hair feels ok, then 3 weeks later it starts breaking.

You need to use a colour remover.
I like Decolour Remover and it's pretty good on blue. You can use that 3 times. See where that gets you and we can help further 🙂

Thanks, I don't really want to bleach again to be honest! I'd just like to mask the green :(typically I have a wedding to go to this weekend.. Why I didn't wait I'm not sure!!

Try the colour remover as it'll make that a lot easier, might even remove it. If it doesn't, then I can only suggest spot toning the green with tomato sauce (never tried it, but it's said to be effective) or using a little red dye in some conditioner. Hopefully then you'll avoid adding more red to the rest.

I can't offer any better advice than Janine b has on this topic, but just wanted to add that I actually think it looks really pretty 🙂 the way the blue bits sit it looks intentional.

Some effective fading techniques suggested here... good luck!