Cosmetics company L’Oreal has teamed up with Organovo, a bioengineering startup, to 3D-print human skin—a move that may at first sound unsettling, but actually comes as no big surprise. The French beauty firm has been growing skin since the 1980s to use in animal-free cosmetics testing. With the advent of 3D-printing technology, however, L’Oreal can speed up the process—current skin culture technology can take up to a week to complete—and make it more affordable.

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