July 2025 in “International Journal of Trichology” This review investigates how various intrinsic factors—such as growth factors, cytokines, chemokines, and interferons—regulate hair growth through evidence gathered from in vitro and in vivo studies, highlighting the need for further research in human subjects to validate these findings.
20 citations
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January 2019 in “Journal of dermatological science” This study suggests that androgens enhance growth factor production in dermal fibroblasts, which in turn may alter keratinocyte differentiation and contribute to acne lesion formation.
7 citations
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December 2021 in “Pharmaceutics” This review examines the anti-alopecia effects of plant-derived phytochemicals and their mechanisms for promoting hair growth, but it reports no new clinical findings.
226 citations
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August 2006 in “Molecular and Cellular Biology” This study found that EGFR signaling modulates GLI target gene expression, potentially influencing outer root sheath cell specification and hair growth, and may have implications for cancer.
113 citations
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September 2005 in “Journal of Investigative Dermatology” This study found that a topical hedgehog agonist can stimulate hair growth by promoting the transition from the resting to growth phase of the hair cycle in adult mouse skin.