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All Comparisons

GHK-Cu vs AHK-Cu (Copper AHK)

Research material comparison: purity standards, available formats, molecular data, batch COA documentation, and regulatory status. For in vitro research use only.

GHK-Cu: FAHK-Cu (Copper AHK): D
AttributeGHK-CuAHK-Cu (Copper AHK)
CategorySkin & Tissue RepairCosmetic / Research
Evidence RatingF — No Regulatory ActivityD — Preclinical Only
Clinical StatusAvailable in cosmetic formulations; no drug approvalResearch-only
MechanismGHK-Cu chelates copper(II) ions via its histidine residue and delivers bioavailable copper directly to cells, preventing free copper oxidative damage. It stimulates collagen, elastin, and glycosaminoglycan synthesis, modulates metalloproteinases (MMPs) and their tissue inhibitors (TIMPs), attracts i...Copper-dependent enzyme activation enhances dermal papilla cell stimulation. The copper complex promotes angiogenesis and ECM remodeling, with enhanced bioactivity compared to the non-copper form.
Half-Life~30 minutes plasma—
Bioavailability—Topical only
Molecular Weight~403.9 g/mol~417.9 g/mol (copper complex)
WADA StatusNot ListedNot Listed
Research Half-Life~30 minutes plasma—
Key Use Cases
  • Skin Health
  • Anti-Aging
  • Wound Healing
  • Hair Growth
  • Skin Health
Safety Concerns
  • Safety profile is excellent with minimal side effects reported in decades of cosmetic use and clinical research (PMID: 29986520)
  • Topical forms are generally well-tolerated; mild skin irritation rare and typically limited to very sensitive skin
  • Injectable forms: mild injection site reactions, lightheadedness, nausea, flu-like symptoms possible; rotate injection sites to reduce local irritation
  • Potential skin irritation at high concentrations
  • Copper sensitivity possible
Contraindications
  • Copper sensitivity, Wilson disease, or Menkes disease (copper overload conditions)
  • Active skin infections at application site
  • Pregnancy and breastfeeding (safety not established)
  • Active cancer without medical clearance
  • Known copper hypersensitivity
Regulatory (US)Available as a cosmetic ingredient (Copper Tripeptide-1). Not FDA-approved as a drug. Removed from FDA Category 2 on April 15, 2026 after HHS Secretary Kennedy directed withdrawal of nominations. PCAC review scheduled July 23-24, 2026. No IND application filed for injectable use.—

Research Material Specifications

Catalog specifications for the corresponding research materials, including batch documentation coverage.

SpecificationGHK-CuAHK-Cu (Copper AHK)
Purity Standard>99%>99%
CAS Number89030-95-5—
Molecular FormulaC₁₄H₂₂CuN₆O₄—
Available Formats50mg, 100mg100mg
Batch COAs Published1 on file—
Stock StatusIn stockOut of stock

Research Disclaimer: This comparison is provided for educational purposes only. All products are sold exclusively for in vitro research use. The information presented is based on published preclinical and clinical research and does not constitute medical advice. Consult a qualified healthcare professional before making any decisions regarding peptide use.

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