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The effects of exosomes on hair growth cycle. Hair follicle growth consists of a continuous three-phase cycle: anagen, catagen, and telogen. Exosomes stimulate the conversion from telogen to anagen and delay the progression to catagen, resulting in prolonged anagen. Exosomes also increase levels of β-catenin, leading to augmented hair growth. DPC-exos indicates dermal papilla-derived exosomes; HaCaT-exos, keratinocyte-derived exosomes; MSC-exos, mesenchymal stem cell-derived exosomes.
