DD bleached hair has gone green and falling out - how to remedy whilst travelling?

[Kweeen]

DD has been travelling for last 5 months and her hair has gone green from assume swimming pool, heat etc. She is back next month but is there anything she can do now whilst she is still away. I will book her in somewhere for when she returns but what will they likely do to salvage it. She is happy for it to be dyed back to light brown with a couple of highlights.

I might be wrong but I think some people use ketchup???
The falling out is more concerning. Deep conditioner?

Surely there is hairdressers where she is? I wouldn't be touching it myself in her shoes.

Ketchup

Another vote for ketchup. It does work. I used it on my daughters hair when it went green on holiday

She did tell me ketchup and I didnt believe her....

What would they do here to remedy - so she can ask for that to be done there?

Ketchup. The red neutralises the green.

She will need a consultation when she’s back so the hairdresser can see the condition of her hair and make some suggestions.

Ketchup then Cut it short and leave it alone! Not much can be done if its breaking & falling out.

Red counteracts green so a red toner can help