GHKCu is a naturally occurring copper peptide that upregulates collagen I and III, elastin, glycosaminoglycans, and wound-healing pathways while shifting gene expression toward a more youthful pattern and reducing inflammation and oxidative damage
doi: 10.1212/WNL.0b013e31827f0fd1
(2021) This placebo-controlled study tested copper tripeptide serum in a double-blind design, providing gold-standard clinical evidence for the topical application that the review's gene data supports
Inconsistent administration Skipping doses, irregular timing, and forgotten applications all reduce effectiveness
[DOI] [PubMed] [Google Scholar] Hartung H, Threlfell S, Cragg SJ (2011) Nitric oxide donors enhance the frequency dependence of dopamine release in nucleus accumbens
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