The research team reportedly employed induced pluripotent stem cells. From those cells, the team grew precursor cells to keratinocytes, a type of skin cell that forms hair follicles, which produce hair, and then blended the precursor cells with mouse cells that stimulate hair production. The mix was injected under the skin of mice. In two to three weeks, they found partial regrowth of hair follicles.
The researchers will next seek to regenerate hair follicles using only human cells, according to the report.