Microneedle-Assisted Delivery of PEGylated Recombinant Human Fusion Collagen for Androgenetic Alopecia: Preclinical and Pilot Clinical Evidence
June 2026
in “
Journal of Cosmetic Dermatology
”
microneedle-assisted delivery PEGylated recombinant human fusion collagen androgenetic alopecia testosterone-induced AGA hair regrowth hair follicle count anagen phase Wnt/β-catenin-VEGF axis hair density vellus hairs terminal hairs ECM repair functional pathway activation microneedling PEG-rhCol-F AGA hair growth hair follicles hair cycle Wnt pathway VEGF hair thickness vellus to terminal transition extracellular matrix repair
Studysummary This study reported that microneedle-assisted delivery of PEGylated recombinant human fusion collagen significantly improved hair regrowth and density in an androgenetic alopecia mouse model and in a small clinical trial with AGA patients, suggesting potential efficacy and safety for this treatment approach.
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