Knowledge Centre
GHK-Cu for Wound Healing
Copper peptide and tissue repair, explained.
GHK-Cu is one of the most-studied compounds in wound-healing science. Here is what the copper peptide is, how it supports repair, and what four decades of research actually suggest.
GHK-Cu is a copper tripeptide — three amino acids (glycine, histidine, lysine) bound to a copper ion. It was first identified in human plasma in 1973 by researcher Loren Pickart, who noticed that the molecule appeared to help aged tissue behave like younger tissue.
The body produces GHK-Cu naturally, but levels fall steadily with age — declining markedly between your twenties and your sixties. That drop tracks closely with the slower healing and thinner skin associated with ageing, which is exactly why researchers became interested in supplementing it.
In tissue-repair research, GHK-Cu is studied for several complementary actions:
- Collagen and elastin synthesis — the structural proteins that rebuild skin and connective tissue.
- Angiogenesis — the formation of new blood vessels that feed a healing site.
- Anti-inflammatory and antioxidant activity — dialing down the excess inflammation and free-radical damage that slow repair.
- Recruitment of repair cells — attracting the cells that clear debris and lay down new tissue.
Together these give GHK-Cu its reputation as a “remodelling” signal rather than a blunt growth factor.
Across four decades of laboratory and animal studies, GHK-Cu has been associated with meaningfully faster, higher-quality tissue repair. Reported research findings include substantial increases in collagen production and accelerated closure of experimental wounds, alongside improvements in the strength and organisation of the repaired tissue.
In research settings GHK-Cu is used both topically and as a reconstituted solution for subcutaneous study. Like other lyophilised peptides, it is reconstituted with bacteriostatic water and kept refrigerated once mixed.
See our reconstitution guide and injection guide for the standard handling method, and how peptides are tested for why third-party verification matters with copper peptides in particular.
Is GHK-Cu the same as regular copper?
No. GHK-Cu is a specific peptide that carries copper to where it is biologically useful. It behaves very differently from a plain copper supplement.
Topical or injectable for research?
Both are studied. Topical work focuses on skin-surface effects; reconstituted subcutaneous research is used where deeper or systemic signalling is the question.
Why does GHK-Cu solution look blue?
The blue tint comes from the copper ion and is normal for a correctly reconstituted copper-peptide solution.