Our expert says:
The green colour is caused by traces of metal (copper etc) in the pool chemicals that react to very porous blonde hair. It may help to put conditioner on her hair before she swims (best to wear a swimming cap if possible) She may need a special shampoo and conditioner regularly to reduce brittleness and dryness, so speak to your local hairdresser about using specialized salon products for her. This will also reduce hairloss.
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