Peptide
GHK-Cu
Copper Peptide, Copper Tripeptide-1
Legal / OTCHuman StudiesInjection (SubQ) or topical
Half-life
Unknown
Common dose
2-5mg/day injectable, or 1-5% topical
How it works
Naturally occurring copper complex that declines with age. Activates wound healing, stimulates collagen and elastin synthesis, promotes hair follicle activity, and has potent anti-inflammatory and antioxidant effects.
Commonly used for
Skin healthHair growthWound healingAnti-aging
Potential benefits
- Strong evidence for skin rejuvenation and collagen production
- Clinically studied for hair loss — promotes follicle growth
- Anti-inflammatory and antioxidant properties
- Available in topical form — no injections needed
- One of the most studied peptides in cosmetic science
Risks and downsides
- Topical absorption is limited without proper formulation
- Results take 8-12 weeks to become visible
- Can cause skin sensitivity at high concentrations
- Injectable form has limited human data
- Quality varies enormously between vendors
Heads up: This is for educational purposes only and is not medical advice. Many compounds here are not FDA approved for human use. Please talk to a doctor before starting anything.
Risk level
Evidence
What you need to get started
Community experiences
Been there?
Sign in to share your experience with the community.
Loading reviews...