GHK-Cu
Copper Peptide · Skin Regeneration & Anti-Aging Compound
Overview
Naturally occurring copper tripeptide found in human plasma, saliva, and urine. GHK-Cu affects 31.2% of human genes and declines significantly with age—from ~200 ng/ml at age 20 to ~80 ng/ml at age 60. Known for skin regeneration, wound healing, and anti-aging properties.
Penetrates skin layers, activates fibroblasts, stimulates collagen and elastin synthesis, promotes angiogenesis, and modulates inflammatory responses. The copper ion is essential for enzyme cofactor activity in tissue repair processes.
Increases type I and III collagen production by up to 70% in human dermal fibroblasts.
Stimulates elastin synthesis for improved skin elasticity and resilience.
Strengthens protective barrier and improves moisture retention.
Mechanism
Naturally occurring copper tripeptide found in human plasma, saliva, and urine. GHK-Cu affects 31.2% of human genes and declines significantly with age—from ~200 ng/ml at age 20 to ~80 ng/ml at age 60. Known for skin regeneration, wound healing, and anti-aging properties.
Penetrates skin layers, activates fibroblasts, stimulates collagen and elastin synthesis, promotes angiogenesis, and modulates inflammatory responses. The copper ion is essential for enzyme cofactor activity in tissue repair processes.
Increases type I and III collagen production by up to 70% in human dermal fibroblasts.
Research areas
- Naturally occurring copper tripeptide found in human plasma, saliva, and urine. GHK-Cu affects 31.2% of human genes and declines significantly with age—from ~200 ng/ml at age 20 to ~80 ng/ml at age 60. Known for skin regeneration, wound healing, and anti-aging properties.
- Penetrates skin layers, activates fibroblasts, stimulates collagen and elastin synthesis, promotes angiogenesis, and modulates inflammatory responses. The copper ion is essential for enzyme cofactor activity in tissue repair processes.
- Increases type I and III collagen production by up to 70% in human dermal fibroblasts.
- Stimulates elastin synthesis for improved skin elasticity and resilience.
- Strengthens protective barrier and improves moisture retention.
Research notes
- Mild skin irritation initially (usually resolves)
- Increased photosensitivity
- Severe skin irritation, burning, or persistent redness
- Allergic reactions (rash, swelling, difficulty breathing)
- Unusual skin discoloration or staining
References
- pubmed.ncbi.nlm.nih.gov/29986520/
- pubmed.ncbi.nlm.nih.gov/39963574/
- pubmed.ncbi.nlm.nih.gov/38387323/
- pubmed.ncbi.nlm.nih.gov/26236730/
- pubmed.ncbi.nlm.nih.gov/22666519/
Questions
How much does GHK-Cu decline with age and why does that matter?
GHK-Cu levels drop dramatically from ~200 ng/ml at age 20 to ~80 ng/ml at age 60—a 60% decline. Since GHK-Cu affects 31.2% of human genes, this decline contributes significantly to aging phenotypes. Supplementation aims to restore youthful peptide levels and potentially reverse age-related gene expression changes.
Can I safely combine GHK-Cu topically with retinoids?
GHK-Cu can be combined with retinoids but may increase skin sensitivity and irritation, requiring careful introduction. Start with lower GHK-Cu concentrations (0.5%) and alternate retinoid use, or apply them on different days. Patch testing is essential before full-face combined use.
How long does it take to see visible skin improvements with GHK-Cu?
Timeline for topical GHK-Cu: improved hydration in weeks 1-2, reduction in fine lines by weeks 3-4, noticeable elasticity improvements by weeks 6-8, and peak anti-aging effects by weeks 8-12. Hair growth benefits take longer—typically 6-12 weeks for initial follicle stimulation effects.