GHK-Cu

Copper Peptide · GHK-Copper

Cosmetic Use

The skin regeneration peptide hiding in your own blood. Proven in topical form, fascinating when injected.

Anti-AgingEvidence: ★★★★☆

Educational content only. Not medical advice. This compound may be regulated in your jurisdiction. Consult a healthcare professional.

01 What is GHK-Cu?

GHK-Cu is one of the few peptides with a genuinely strong evidence base — partly because it's already commercially successful as a skincare ingredient. This naturally-occurring copper peptide is found in human blood plasma, saliva, and urine, declining significantly with age (by 60, you have about 40% of what you had at 20). Topically, GHK-Cu is well-established: it promotes collagen and elastin synthesis, reduces fine lines, improves skin thickness, and accelerates wound healing. But the biohacking community is more interested in its systemic effects when administered subcutaneously — potential benefits for tissue remodelling, inflammation reduction, and even hair regrowth.

02 How Does It Work?

GHK-Cu works as a biological signal that activates tissue remodelling processes. It stimulates collagen synthesis, promotes decorin production (which organises collagen fibres), increases production of metalloproteinases (which break down damaged tissue), and promotes angiogenesis (new blood vessel formation). The copper component isn't just structural — copper ions are essential for the enzymes (like lysyl oxidase) that cross-link collagen fibres, making them stronger. GHK delivers copper directly to where it's needed.

03 What Does The Research Say?

Evidence Quality:★★★★☆

Strong clinical evidence from human trials.

Topical research is extensive and well-established — multiple clinical trials show improvements in skin elasticity, firmness, and wound healing. The injectable research is more limited but intriguing: animal studies show accelerated wound healing, reduced fibrosis, and even lung tissue remodelling. A fascinating 2014 study showed GHK-Cu could reverse gene expression in human cells, switching 1,300+ genes toward a younger expression pattern. This is preliminary but suggests mechanisms beyond simple collagen stimulation.

04 Reported Dosages

Research literature dosages only. NOT medical recommendations. Always consult a healthcare professional.

Topical: 0.1-1% in serums and creams (widely available commercially). Subcutaneous: Community reports typically use 1-2mg daily for 10-30 day protocols. These are research dosages, not medical recommendations.

05 Side Effects & Risks

Topical: Generally very well tolerated. Occasional skin irritation. Injectable: Injection site reactions, occasional lightheadedness. Long-term injectable safety data is limited.