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And it went against the recommendation of the FDAs own scientists

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At optimal concentrations, GHK-Cu increases mRNA production for collagen types I and III, elastin, proteoglycans, and glycosaminoglycans, while laboratory studies show that topical application for 12 weeks improves collagen production in 70% of subjects compared to 50% with vitamin C and 40% with retinoic acid

Adjunct to conventional therapies: Because mechanisms differ from finasteride (systemic 5-AR type 2 inhibition) and minoxidil (K_ATP channel opening/vasodilation), GHK-Cu could be paired with these or with low-level light therapy, microneedling, or PRP to address inflammation, ECM health, and microvascular support key complements for comprehensive regrowth regimens