While the majority of hair-related research has examined how best to grow new hair, the latest discovery focuses attention on how to stop existing hair from falling out.A team at the Black Family Stem Cell Institute at the Icahn School of Medicine at Mount Sinai, in New York City, recently published the study, “Dermal sheath contraction powers stem cell niche relocation during hair cycle regression,” in the journal Science. Lead researcher Dr. Michael Rendl says the team zoomed in on the role played in the life cycle of a human hair follicle by the dermal sheath, the muscle that surrounds each follicle.We’ve known for many years that dermal papilla cells are central in the creation of each new hair shaft. We previously posted the story, “
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