Там ниже по ссылке:" He added that women who dyed their hair red from another colour were signalling they were looking for a partner, and added: "Even women in a fixed relationship are letting their partners know they are unhappy if they dye their hair red. They are saying that they are looking for something better."
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Я не нашел, очень скрытная дама
Redheads 'have more sex than blondes or brunettes'