Help - Teenage hair dye fail!!

[DorsetCamping]

Unbeknownst to me DD (13) tried to dye the front section of her long hair, black over half term.

She has brown hair and in her wisdom, when the first application didn't take, she tried 3 more times!

The end result is far from black - it's blue/green!

School have gone mad, no hairdressers open to correct it. It's supposed to be semi permanent but nothing semi about it. She has washed it literally dozens of times since dyeing it, but nothing is shifting the bloody colour!

School now threatening her with isolation on Monday if it's not out. WTF can I do?!!

Tried various shampoos and even washing up liquid (advice from somewhere). Anything else I haven't thought of?

You need to add red to balance out the green because they are opposite colours. Something like a red tones should help it

I think given the current situation the school need to get over themselves

Fair enough in normal times when she can visit a hairdresser. Its not even like shes tried to go blue/green so Im assuming its more an off colour.

Semi permanent never truly washes out though, especially on a lighter base it stains the hair, so even with lots of washing it will only strip out so much. Sorry I did read brown but assumed it was a light brown with lots of blonde in due to the green result.

I have naturally very light brown hair with red and blonde highlights in and dyed my hair black through my teens, when I wanted it gone the only choice was to strip it with bleach.

shave her hair off.

We’ve all done it, I used a golden dye and ended up with orange hair. I didn’t drive at the time and had to call my boyfriend to come and get me to go and get another dye. This was before they recommended to do a test 24 hours before.

Definitely ColorB4 from a chemist. The smell will learn 'er

It sounds like reapplying has overprocessed the hair, it may not hold further colour and more chemical treatments will just fry it. How about Wella Color Fresh? It's sort of like a conditioning colour rinse, it worked well to correct a terrible orange balayage I had a few years ago. It rinses out but is easy to reapply and won't further damage the hair.

Colour Remover is really good, I used it on mine and the condition afterwards was amazing. You can get it in Boots.

Beaten to it but if recommend tomato ketchup

I'm sorry OP but I don't think colour remover is going to fix this.

Dark brown hair has almost equal quantities of red/blue/green. The lighter the hair colour the less red it has in it.

You say your DD's hair is brown but not how light/dark.

If it's on the lighter side the colour she's used has basically over concentrated the blue/green because she's used a "cool" colour (black) with high blue/green pigment.

This is why you need to choose your dye carefully - the lighter you are you need dye with warm undertones (ie more red) to compensate for those not naturally present in your hair.

If she's done this 3 times a colour remover might lighten it a bit but it's not going to correct the blue/green/red balance.

You say you don't want to dye it again but tbh I think this is your only option - but you'll need to choose a warm brown colour going towards aurburn (ie much redder than her normal hair colour) to "up" the red in order to counter the blue/green.

Even then you'll still have an issue in that she's only done half her hair and in all honesty I think only a professional will be able to fix this properly.

In your case given we are in lockdown I'd buy an auburn colour - but only do the front and see how it comes out.

Fingers crossed it looks good I'd then do the back but only put it on for a very short amount of time to try and blend it with the front bearing in mind it will come out more "red" than the front if allowed to develop fully.

Disclaimer: I'm not a hairdresser. I have however rescued a couple of DSD's self colour disasters in the past .

@Spied

Beaten to it but if recommend tomato ketchup

Worth a try - same principle as my post above - you're trying to add the red back.

I doubt it will be enough though if she's zapped it 3 times.

You could try ordering some vitamin c powder, 500 grams or more, wack in a tub, not metal, mix with clarifying shampoo, head and shoulders or something like that and leaving it on n four hours, I wrapped hair in cling film or used carrier bag, rinse it off for at least five minutes, set a timer. It's worked better for me than hair dye remover and can dye over it straight away if like. I've never used it in blue black hair, have used it on level 6 what went flipping awful ,and other colours. I can't remember if I've used it on a semi, done it many time over the years, never learned....
Also accidentally took a lot of colour out leaving coconut oil on overnight once, maybe worth a try, did it on clarified, dry hair,no conditioner. Melted aload, wacked it in and covered in cling film and behold my lovely colour had near enough gone when I washed it. .

If do try vit c, that's best on clarified hair, no conditioner, too, I mixed it to a thick paste consistency, hope you get sorted!