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For the many Brazilian women who can’t afford the imported version of American sperm, but are after a blue-eyed baby, there is always Facebook.

Every month, scores of Brazilian men post offers there to impregnate women free, either by having sex or with a needleless syringe, says The Wall Street Journal.

The Journal said among the men posting the offers on Facebook is João Carlos Holland de Barcellos.

Barcellos is a 61-year-old computer scientist whose piercing blue eyes and silvery blond hair—a legacy of what he says are his English and German ancestors—make him popular with wannabe Brazilian moms.

His wife manages his agenda and transfers his semen via syringe to the near-daily guests to their chaotic São Paulo home.

He sees children as a way to perpetuate his genes and ensure his existence beyond death.

This he says, is an atheist’s way to achieve immortality.

But the real deal is the importation of sperm from the U.S.A.

Over the past seven years, human semen imports from the U.S. to Brazil have surged.

Richer single women and lesbian couples select donors whose online profiles suggest they will yield light-complexioned and preferably blue-eyed children.

Brazil is one of the fastest-growing markets for imported semen in recent years, said Michelle Ottey, laboratory director of Virginia-based Fairfax Cryobank, a large distributor and the biggest exporter to Brazil, said The Journal.

More than 500 tubes of foreign semen frozen in liquid nitrogen arrived at Brazilian airports last year, officials and sperm-bank directors said, up from 16 in 2011. Complete data from Anvisa, Brazil’s health-care regulator, isn’t yet available for 2017.

U.S. sperm-bank directors said preferences like those of Brazilian purchasers hold across their global market.

“The vast majority of what we have and what we sell is the Caucasian blond-haired, blue-eyed donors,” said Fredrik Andreasson, CFO of Seattle Sperm Bank, which provides about a quarter of Brazil’s imports.

The article said everyone wants a “pretty kid” and for many parents in Brazil, where prejudice often runs deep, that means “the white biotype—light-colored eyes and skin.