Shower system turned blond residents to have green hair

Source: Getty Images

Several blond residents of a southern Swedish town were left with green hair after an unusual reaction between the water supply and the shower system of a number of new homes.

Authorities began investigating when a number of inhabitants of Anderslov complained that their hair suddenly turned green. They tested the water supply in several homes to see if there was a high level of copper - known to turn hair green - but recorded only normal levels of the metal.

However, when hot water was left in the houses' water systems overnight, the amount of copper in it was found to increase to five or 10 times the normal amount.

Investigators concluded that the hot water must have peeled copper from the pipes and water heaters. The copper then was absorbed into the water, causing the shock hair colour change when residents showered.

Read more.