Scientific References

ION BLUE GHK-Cu scientific references — peer-reviewed research

Every scientific claim we make links back to primary, peer-reviewed research. Here are the core studies behind ION BLUE's science — with full citations, not mystery links — so you can read them yourself. The truth wins.

Core GHK-Cu research

  1. Pickart L, Vasquez-Soltero JM, Margolina A. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. BioMed Research International. 2015;2015:648108. DOI: 10.1155/2015/648108. Read the full paper →
  2. Pickart L. The Human Tri-Peptide GHK and Tissue Remodeling. Journal of Biomaterials Science, Polymer Edition. 2008;19(8):969–988. PMID: 18644225. Read on PubMed →
  3. Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. International Journal of Molecular Sciences. 2018;19(7):1987. PMID: 29986520. Read the full paper →
  4. Pickart L, Margolina A. Skin Regenerative and Anti-Cancer Actions of Copper Peptides. Cosmetics. 2018;5(2):29. DOI: 10.3390/cosmetics5020029. Read the full paper →
  5. Pickart L, Thaler MM. Tripeptide in human serum which prolongs survival of normal liver cells and stimulates growth in neoplastic liver. Nature New Biology. 1973;243(124):85–87. PMID: 4349963. Read on PubMed →

Reviews and independent perspectives

  1. Jfri A, et al. Oral and topical peptides for skin aging: systematic review and meta-analysis of randomized controlled trials. Frontiers in Medicine. 2026;13:1618306. doi.org/10.3389/fmed.2026.1618306
  2. Gordon J, MD. A Dermatologist's Take on the Copper Peptide (GHK-Cu) Trend. Westlake Dermatology. Read →
  3. Dow C. What Are Injectable Peptides, and Are They Safe? Center for Science in the Public Interest, June 2026. Read →

Topical use and cosmetic context

  1. Borkow G. Using Copper to Improve the Well-Being of the Skin. Current Chemical Biology. 2014;8(2):89–102. Read the full paper →
  2. Hostynek JJ, Dreher F, Maibach HI. Human skin penetration of a copper tripeptide in vitro as a function of skin layer. Inflammation Research. 2011;60(1):79–86. Read the full paper →

Included for context on topical cosmetic formulation, including how far a copper tripeptide penetrates the skin's layers.

Note: much of the strongest evidence for GHK-Cu comes from laboratory, animal, and wound-healing research, with smaller human cosmetic studies.

How ION BLUE uses research

We reference scientific literature to guide formulation decisions with clarity and restraint: ingredient selection, concentration philosophy, and cosmetic context. We describe what GHK-Cu is studied for, never more than the evidence supports, and we don't use research to make medical claims.

Where these are cited

What Is GHK-Cu? · Why 0.10%? · How much GHK-Cu? · Do copper peptides work? · Are peptides safe? · All science

For 60 individual peptides and 88 verified references, see the ION BLUE Peptide Encyclopedia.

See the ION BLUE GHK-Cu serum — 0.10% pure GHK-Cu (1,000 ppm), disclosed.

Educational content is not medical advice. ION BLUE products are cosmetics and are not intended to diagnose, treat, cure, or prevent any disease.