Redheads are being turned away from the largest sperm bank in the world—because not enough people want children with red hair.

The director of Cryos International, Ole Schou, said that there have been so many donations made in the last few years that now the facility can afford to be picky.

The international sperm bank has been inundated with donations, but the demand for red-haired children isn't soaring like the supply of sperm.

"There are too many redheads in relation to demand. I do not think you chose a redhead, unless the partner—for example, the sterile male—has red hair, or because the lone woman has a preference for redheads. And that's perhaps not so many, especially in the latter case," said Schou.

Schou went on to say that the only real demand for redheaded semen comes from Ireland, where it sells "like hot cakes".

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Cryos have now reached their capacity of 70 liters of semen, approximately 14,000 donations, and there are 600 donors on the waiting list.

Sperm from donors with brown hair and eyes is particularly in demand, because Cryos has many customers in Mediterranean countries.

Historically, red hair was thought to be a mark of moral degeneration and beastly sexual desires.

Scotland has the highest proportion of gingers, affecting 13 percent of the population, but it is estimated that there are somewhere between 6 to 18 million redheads in America.