Need HELP with hair - have really messed it up [sad]

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Long story short, hairdresser did my hair last november beautiful chocolate brown with caramel highlights. Came back and did it in January and put bright yellow through the top, didn't mix it in with the rest of the hair - looked awful and also base colour was wrong. Went to hairdressers early March who did an okay job of fixing it but it wasn't perfect and to be honest most of what she seemed to do was use a toner at the end - after paying nearly £200 a few weeks later the yellow came blasting through. Got fed up and home dyed it myself but did it way too dark, looked awful. So instead of leaving it I used Colour B4 which has worked somewhat but my hair is so dry/dead it's hideous. I have tried my usual kerastase plus the deep conditioning treatments from the home dye kits, also put VO5 hot oil on it last night and nothing is working. Colour is darkening up again by the day and it is frizzy and horrid - any ideas? Should I re-dye or leave well alone for a few weeks? Is anything going to make it better? Very pissed off with self!

the best thing i have found is to use coconut oil on wet hair & put a shower cap and leave it on over night. sounds like you need to get some moisture back in. or get a mask & leave that in over night with some moroccan oil in. i recently runined my hair so i know the feeling. i would wait till your condtion improves to colour it & if you do maybe just use a semi as these aren't so harsh on your hair. how long is your hair? can you just keep it back for a few weeks? sounds like you may need a cut to get rid of some of the dead hair.

I would personally stick a semi perm over it with a warm tone, so something like Castings Chocolate.

That will coat the hair and at least give the illusion of shine. I think your hair is re-oxidising by the sound of it. Don't stick a cool/neutral shade on it or it will turn black. Chestnut tones hopefully will help. You need to leave time between ColourB4 and dying again.

For future ref it has been my experience you are better off bleaching off a dark colour-not to get it blonde but to take it down a couple of shades-so for about 5-10mins-then popping a warm brown on top.
The warm brown counteracts any green tinge when dying after bleach and it also doesn't turn black.

You need something with hydrolised protein in it, preferably hydrolised elastin, but any decent hydrolised protein. Oils are all very well but if your hair has had its protein compounds effed about with all the oil in the world won't help (though it is useful if just dry and not structural, and its useful after you have sorted the structure out)

Here's a few for varying budgets:

Fudge dynamite
Philip Kingsley Elasticiser
Kerastase Resistance Masque
Fekkai protein RX

The VO5 stuff actually has hydrolised keratin protein (which is the protein that hair is made up of) however you only leave it on for a minute - I think it needs longer personally.

By the way, I did a lot of processing of my hair over the last year or so (more than you trust me) and the condition will improve. You just need to put the protein back in.

After a few weeks of intensive conditioning, you could colour one more time, and you might actually find it helps the condition, but I suggest you only use 3% (10 volume peroxide) - so a semi, basically - and wait till you have seen some improvement in the texture.