WHAT CAUSES GREEN HAIR
Green tinged hair is caused by the hairs reaction to copper, and is most prevalent in those that have naturally blond or bleached hair. Most people associate this unsightly colour change with swimming in a chlorinated pool, and quite rightly too. Chlorinated pools often contain copper algaecides – a compound that helps prevent the growth of algae.
However, copper can also be found in home water supplies, especially if your pipes are made of copper. However, you can get a special water filter that helps to remove the copper.
There are a few things that can be done to avoid getting green hair. One is to wear a swim-cap in the pool, or use a waterproof protective hair product. If you already have green tinged hair, a lemon juice rinse can be quite effective.