Exosome-Based Therapies for Alopecia Areata: A Systematic Review of Clinical and Experimental Evidence
December 2025
in “
International Journal of Molecular Sciences
”
New to Alopecia Areata? There is a guide in the encyclopedia. Read the guide → Studysummary This review examined 40 studies on exosome-based therapies for alopecia areata, reporting significant hair regrowth and improvements in hair count, length, and thickness, but highlighted the need for standardized methodologies and robust RCTs before clinical application.
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This systematic review evaluates the potential of exosome-based therapies for treating alopecia areata (AA), an autoimmune condition with limited treatment options. The review included 40 studies, comprising clinical, preclinical, in vivo, and in vitro research. Clinical studies reported increases in hair density and improvements in hair count, length, and thickness, while experimental studies showed significant hair regrowth and follicular regeneration. The activation of the Wnt/β-catenin pathway and enhanced dermal papilla and hair follicle stem cell function were noted, alongside anti-inflammatory effects. The safety profile was favorable, with only mild, transient local reactions reported. Despite promising results, the review highlights the need for robust randomized controlled trials and standardization of exosome sources, doses, and delivery methods before clinical application.
