# GHK-Cu References: The Cited Copper-Peptide Research Record

> GHK-Cu references and citations: every PubMed, PMC, and DOI source behind the collagen, hair, safety, and gene-expression claims on this site. The full copper-peptide research record.

Each finding here traces to a specific peer-reviewed source — PubMed, PMC, and DOI. The full list, indexed by the markers used across the pages.

## How to read this list

Every bracketed marker on this site — [1], [2], and so on — resolves to a numbered entry below. The list is the full set of GHK-Cu references and citations behind the collagen, skin, hair, antioxidant, safety, and gene-expression claims across the digest. Each entry carries authors, journal, year, and a DOI or PubMed/PMC link so any quantitative statement can be checked at its source. Where a study tested the free GHK peptide rather than the copper complex, that distinction is preserved in the page text, because copper coordination is required for most documented activities [3]. The reference numbers are stable across the site; the same source keeps the same number wherever it is cited.

## References

[1] Maquart FX, Pickart L, Laurent M, Gillery P, Monboisse JC, Borel JP. Stimulation of collagen synthesis in fibroblast cultures by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+. FEBS Lett. 1988;238(2):343-346. https://pubmed.ncbi.nlm.nih.gov/3169264/
[2] Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. Int J Mol Sci. 2018;19(7):1987. https://pmc.ncbi.nlm.nih.gov/articles/PMC6073405/
[3] Pickart L, Vasquez-Soltero JM, Margolina A. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. Biomed Res Int. 2015;2015:648108. https://pmc.ncbi.nlm.nih.gov/articles/PMC4508379/
[4] Lee WJ, Sim HB, Jang YH, Lee SJ, Kim DW, Yim SH. Efficacy of a Complex of 5-Aminolevulinic Acid and Glycyl-Histidyl-Lysine Peptide on Hair Growth. Ann Dermatol. 2016;28(4):438-443. https://pmc.ncbi.nlm.nih.gov/articles/PMC4969472/
[5] Hostynek JJ, Dreher F, Maibach HI. Human skin penetration of a copper tripeptide in vitro as a function of skin layer. Inflamm Res. 2011;60(1):79-86. https://pmc.ncbi.nlm.nih.gov/articles/PMC3016279/
[6] Pickart L. The human tri-peptide GHK and tissue remodeling. J Biomater Sci Polym Ed. 2008;19(8):969-988. https://pubmed.ncbi.nlm.nih.gov/18644225/
[7] Pickart L, Vasquez-Soltero JM, Margolina A. The human tripeptide GHK-Cu in prevention of oxidative stress and degenerative conditions of aging: implications for cognitive health. Oxid Med Cell Longev. 2012;2012:324832. https://pmc.ncbi.nlm.nih.gov/articles/PMC3359723/
[8] Pickart L, Vasquez-Soltero JM, Margolina A. The human tripeptide GHK-Cu in prevention of oxidative stress and degenerative conditions of aging: implications for cognitive health (antioxidant chemistry; copper stability constant log K ~16.44; LDL-oxidation and ferritin findings). Oxid Med Cell Longev. 2012;2012:324832. https://pmc.ncbi.nlm.nih.gov/articles/PMC3359723/
[9] Miller TR, Wagner JD, Baack BR, Eisbach KJ. Effects of topical copper tripeptide complex on CO2 laser-resurfaced skin. Arch Facial Plast Surg. 2006;8(4):252-259. https://pubmed.ncbi.nlm.nih.gov/16847171/
[10] U.S. Food and Drug Administration. Drugs@FDA database (no approved GHK-Cu / Copper Tripeptide-1 drug product for any route; topical Copper Tripeptide-1 is regulated as a cosmetic ingredient). Accessed 2026. https://www.accessdata.fda.gov/scripts/cder/daf/
[11] U.S. Food and Drug Administration. Cosmetics ingredient regulation and the cosmetic-vs-drug distinction (basis for the legal status of topical Copper Tripeptide-1). FDA, accessed 2026. https://www.fda.gov/cosmetics/cosmetics-laws-regulations/it-cosmetic-drug-or-both-or-it-soap
[12] Mortazavi SM, Mohammadi Vadoud SA, Moghimi HR. Topically applied GHK as an anti-wrinkle peptide: Advantages, problems and prospective. BioImpacts. 2025. https://pmc.ncbi.nlm.nih.gov/articles/PMC11830136/
[13] Trachy RE, Fors TD, Pickart L, Uno H. The hair follicle-stimulating properties of peptide copper complexes. Results in C3H mice. Ann N Y Acad Sci. 1991;642:468-469. https://pubmed.ncbi.nlm.nih.gov/1809108/
[14] Arul V, Kartha R, Jayakumar R. Biotinylated GHK peptide incorporated collagenous matrix: A novel biomaterial for dermal wound healing in rats. J Biomed Mater Res B Appl Biomater. 2005;73(2):383-391. https://pubmed.ncbi.nlm.nih.gov/15803494/
[15] Dymek M, Olechowska K, Hac-Wydro K, Sikora E. Liposomes as Carriers of GHK-Cu Tripeptide for Cosmetic Application. Pharmaceutics. 2023;15(10):2485. https://pmc.ncbi.nlm.nih.gov/articles/PMC10610410/
[16] Endo T, Miyagi M, Ujiie A. Simultaneous determination of glycyl-L-histidyl-L-lysine and its metabolite, L-histidyl-L-lysine, in rat plasma by high-performance liquid chromatography with post-column derivatization. J Chromatogr B Biomed Sci Appl. 1997;692(1):37-42. https://pubmed.ncbi.nlm.nih.gov/9187381/
[17] Bobyntsev II, Chernysheva OI, Dolgintsev ME, Smakhtin MY, Belykh AE. Anxiolytic effects of Gly-His-Lys peptide and its analogs. Bull Exp Biol Med. 2015;158(6):726-728. https://pubmed.ncbi.nlm.nih.gov/25900608/
[18] Sever'yanova LA, Dolgintsev ME. Effects of Tripeptide Gly-His-Lys in Pain-Induced Aggressive-Defensive Behavior in Rats. Bull Exp Biol Med. 2017;164(2):140-143. https://pubmed.ncbi.nlm.nih.gov/29181666/

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The GHK-Cu copper-peptide literature, read one scene at a time — collagen dose-response, hair-count trial, copper-stability chemistry, and the human-data gap, each logged to its study and nothing here dispensed.