GHK-Cu
(GHK-Cu)Reviewed by Fat Man in the Arena · Updated March 2026
Key Takeaway
GHK-Cu (copper peptide) is a naturally occurring tripeptide bound to copper that declines with age. It is one of the most well-researched peptides for skin regeneration, wound healing, and anti-aging, with over 60 years of published research.
How it works
GHK-Cu activates over 4,000 genes involved in tissue remodeling. It stimulates collagen and elastin production, promotes blood vessel growth, has anti-inflammatory effects, and acts as a potent antioxidant by recruiting copper to tissues that need repair.
Benefits
- Stimulates collagen and elastin synthesis
- Accelerates wound healing
- Reduces fine lines and wrinkles
- Anti-inflammatory
- Promotes hair growth
- Antioxidant properties
Side effects
- Skin irritation (topical)
- Injection site redness
- Generally very well-tolerated
Dosing protocol
Typical Dose
200 mcg daily (injection) or topical application
Frequency
Once daily
Cycle Length
4-8 weeks
Available as injectable, topical cream/serum, and microneedling solution. Topical is the most common and accessible form.
Key research
GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration
BioMed Research International (2015) — PubMed
GHK-Cu was found to modulate expression of 32% of human genes, activating pathways for tissue repair, anti-inflammation, and anti-cancer activity while suppressing genes involved in tissue destruction.
Frequently asked questions
GHK-Cu has strong research support for anti-aging effects. A 2015 study in BioMed Research International showed it modulates 32% of human genes, activating tissue repair pathways and stimulating collagen synthesis. It is one of the few peptides with decades of published research supporting skin regeneration claims.
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Medical Disclaimer: This content is for informational and educational purposes only. It is not intended as medical advice or a substitute for professional medical consultation, diagnosis, or treatment. Always consult a qualified healthcare provider before starting any peptide protocol.