GHK-Cu: What It Is, What the Research Says, and What You Need to Know

A naturally occurring copper peptide with strong skin regeneration and wound healing research

Last updated: May 1, 2026

GHK-Cu is a tripeptide (three amino acids: glycine, histidine, lysine) complexed with a copper ion. It is naturally present in human blood plasma at concentrations that decline with age.

Discovered in the 1970s by Dr. Loren Pickart, GHK-Cu has since accumulated a substantial body of research demonstrating its role in skin regeneration, wound healing, and collagen synthesis.

It is legally available in topical skincare products as a cosmetic ingredient and has a strong safety profile through decades of cosmetic use.

• In vitro and in vivo studies show GHK-Cu stimulates collagen, elastin, and glycosaminoglycan production.
• Clinical studies demonstrate improvement in skin texture, fine lines, and firmness with topical application.
• Wound healing studies show accelerated closure and improved tissue quality.
• Research suggests potential anti-tumor and gene-regulating effects — an active area of investigation.
• Animal studies indicate possible effects on hair follicle size and hair growth.

These reflect how researchers and research communities discuss this compound — not therapeutic recommendations.

• Skincare and anti-aging topical applications
• Wound healing acceleration
• Hair restoration research
• Collagen stimulation

Activates tissue remodeling, stimulates collagen and glycosaminoglycan synthesis, promotes wound healing via chemoattraction, and has antioxidant and anti-inflammatory effects.