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Beyond that landmark study, the evidence base includes research showing GHK-Cu enlarges hair follicle size, extends the anagen (active growth) phase, stimulates dermal papilla cells (the cells that control follicle activity), promotes angiogenesis (blood vessel growth) to the scalp, and reduces the DHT-related inflammation that causes follicle miniaturization in androgenetic alopecia

Supplementary Tables 7 and 9)

This upregulated gene expression could suggest that P-15 promotes osteoblastic activity in human osteoblast cells

While they both support longevity and cellular health, their primary "jobs" are distinct

BPC-157 shows a short plasma half-life but often more sustained tissue-level effects