In humans a patient suffering from hair loss would give scientists their own progenitor cells, and the hair follicles would be grown in a lab. Once fully grown, they could be transplanted directly onto the patient. Cheng-Ming Chuong, senior author of the research, said: “Normally, many aging individuals do not grow hair well, because adult cells gradually lose their regenerative ability.“With our new findings, we are able to make adult mouse cells produce hair again. In the future, this work can inspire a strategy for stimulating hair growth in patients with conditions ranging from alopecia to baldness.”