Madrid's San Carlos Hospital combined fat-derived stem cells with ATP (energy molecule) to reverse pattern baldness in mice males regrew fur, 90% females fully revived. Human trials planned for 2026; focuses on follicle energy dysfunction.

UVA discovered latent stem cells persist in bald scalps; depleting them halts growth, but reactivating could repopulate follicles. Lab tests on human samples show migration potential for regrowth; early-stage, but paradigm-shifting for scarring alopecia.