Peptide Graded

Copper tripeptide-1

Does Copper tripeptide-1 work?

Not properly: mostly lab and animal work, and one small trial of 13 patients.

CAnimal and cell studiesCosmetic ingredientas of 2026-10-26

For the skin anti-ageing use, the controlled human evidence is a single randomized trial of 13 patients after CO2 laser resurfacing, which found no objective difference in redness or wrinkles. The rest is gene-expression work in cultured cells, animal wound and lung-injury models, and cosmetic-company studies summarized in reviews written by the peptide's discoverer. 4125

The one randomized controlled trial in the citations followed patients after CO2 laser resurfacing around the mouth. Researchers gave them aftercare with or without a copper tripeptide complex. Blinded evaluators and computer image analysis found no significant difference in how fast redness cleared. They found no added benefit on wrinkles or skin quality. Patients using the copper peptide did rate their satisfaction higher. Only 13 patients completed the study. 4

Reviews cite studies by cosmetic companies. These report firmer skin and fewer wrinkles with GHK-Cu creams. The makers ran them, without blinded controls. They are not independent peer-reviewed trials. 1

Evidence checklist

  • Randomised controlled trial One trial after laser, no objective gain
  • Human study over 100 people 13 patients completed the trial
  • More than one research group Reviews mostly by its discoverer
  • Clinical outcomes, not surrogate markers Redness and wrinkles, not outcomes
  • Human safety data beyond case reports No data for injectable GHK-Cu

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More on Copper tripeptide-1

Citations

  1. Pickart 2015, BioMed Res Int: GHK peptide as a modulator of cellular pathways in skin regeneration, review doi.org
  2. Pickart 2017, Brain Sci: GHK gene-expression analyses, review doi.org
  3. Pickart 2008, J Biomater Sci Polym Ed: the human tripeptide GHK and tissue remodeling doi.org
  4. 2006, Arch Facial Plast Surg: topical copper tripeptide complex on CO2 laser-resurfaced skin, randomized trial doi.org
  5. Park 2016, Oncotarget: GHK-Cu in lipopolysaccharide-induced acute lung injury in mice doi.org

Reference information only, not medical advice. Drawn from the Copper tripeptide-1 article, fact-checked against the cited sources. No dosing anywhere on this site.