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Description
What this means in practice: topical GHK-Cu stays localized in the epidermis and upper dermis for 4896 hours, with measurable peptide concentrations persisting in skin biopsies long after serum levels would have cleared from an injected dose
doi: 10.1016/j.cell.2025.05.015

Zhang Y, Wu Y, Zhang M, Li Z, Liu B, Liu H, et al

doi: 10.1186/s10194-020-01111-8, PMID: [DOI] [PMC free article] [PubMed] [Google Scholar] 77.Meccariello R
