I had this problem as a kid...now I see there is treatment for it. I saw something at the checkout counter at the pharmacy the other day for this very thing! Can't remember what it was called, but thought to myself, "wish they had this when I was a kid!!"
a shampoo that takes out the green--I used it when my dd was little--but I can not remember the name. I got it in CVS/Walgreens and I know it's in Target. Sorry I can not remember the name. It takes a few washings to get it back to the natural color--then keep using it to keep it out. My dd was a pool rat and had light brown hair--I remember brushing it and admiring the "gold highlights" and a few days later they were green! Good luck!
I used to use this product a few years ago to the chlorine and green highlights out of my hair. It is basically a clarifying shampoo. I don't know if they still carry it but I remember getting it at CVS or Walmart.
Hair does NOT turn green from Chlorine. It actually turns green if the PH in the water is too high. Its the copper in the water turning her hair green. You might want to get your levels checked. The ph should be between 7.2 and 7.6. If its too high your hair will turn green.
There is a special shampoo you can get that removes the metal from your hair.
My DDs and DSs are tow-heads. We've been having a real problem this summer with green hair. I found that straight vinegar poured on the hair works great. After soaking their hair in white vinegar, they shower and wash and condition as normal. They haven't had any problems with their hair being too dry. Their hair looks shiny and healthy, in fact.