GHK-Cu Copper Tripeptide: Dermal, Wound-Healing, and Hair-Follicle Research

TL;DR. GHK-Cu is a naturally-occurring tripeptide-copper complex (glycyl-L-histidyl-L-lysine + Cu2+) present in human plasma at ~200 ng/mL in youth, declining to ~80 ng/mL by age 60. Published research spans three primary areas: dermal-repair signalling, wound-healing kinetics in cultured keratinocyte / fibroblast models, and hair-follicle cycling in dermal-papilla-cell studies.

Molecular properties

• Sequence: Gly-His-Lys with bound Cu2+
• Molecular mass: ~340 Da free peptide + Cu = ~403 Da complex
• Charge: net positive at physiological pH
• Solubility: highly water-soluble; forms a distinctive blue solution

Research contexts

Dermal-repair signalling

Published research on cultured keratinocyte and fibroblast lines has documented:

• Upregulation of collagen-I and collagen-III gene expression
• Increased glycosaminoglycan synthesis
• Modulation of matrix metalloproteinase (MMP) balance

Wound-healing kinetics

In cultured 3D-skin models:

• Accelerated closure kinetics in scratch-wound assays
• Enhanced angiogenic marker expression
• Improved fibroblast migration rates

Hair-follicle cycling

In dermal-papilla-cell cultures:

• Anagen-phase gene-expression signature upregulation
• Modulation of Wnt/β-catenin signalling markers

Storage and reconstitution

• Lyophilised powder, 24-month shelf life at -20 °C
• Reconstitution note: GHK-Cu is unusually sensitive to reducing agents (avoid DTT, BME in reconstitution buffers)
• Standard buffer: sterile water or PBS pH 7.2
• Reconstituted stability: 14 days at 2-8 °C (shorter than most peptides due to copper-catalysed oxidation)

CoA considerations

GHK-Cu presents unique analytical requirements:

• Copper content: verify the CoA reports copper content by ICP-MS (theoretical 15.8% Cu w/w for a 1:1 complex)
• Peptide purity: HPLC ≥ 99% on the free tripeptide
• Absence of oxidised species: MS should show clean GHK signal without common oxidation-adduct peaks

Bulk sourcing

Manufacturing capacity is broad; GHK-Cu is one of the older well-characterised research peptides. Verify:

• Third-party CoA with ICP-MS copper content
• Copper-source declaration (typically Cu-acetate or Cu-glycinate)
• Batch-level stability data (short shelf-life in solution matters for research planning)

Working with Penlab Peptide

Penlab supplies GHK-Cu in research-grade lyophilised format with batch-level CoAs including ICP-MS copper-content verification. Verified institutional buyers ordering above €50,000/month qualify for tiered bulk discounts. Visit the bulk procurement portal or email sales@penlabpeptide.com.

Products are sold strictly for in-vitro laboratory research by KYC-verified institutional buyers.