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Skin & Repair

GHK-Cu Guide & Tableau de Dose

A copper-binding tripeptide researched for skin remodeling and wound repair.

Également appeléCopper Peptide
Demi-vieshort
Voiesubcutaneous
GHK-Cu — Tableau de dose
Chaque ligne citée
ObjectifDoseFréquenceDuréePreuveSource
Les données de dose sourcées de ce composé sont en cours de compilation.
À des fins de recherche et d'éducation uniquement. Pas un avis médical.

What is GHK-Cu?

GHK-Cu is a tiny, naturally occurring molecule made of just three amino acids — glycine, histidine, and lysine — tightly bound to a copper ion. Its full name is glycyl-L-histidyl-L-lysine copper(II), but most researchers just call it GHK-Cu or "copper peptide."

Here's a striking fact: your body actually makes this peptide on its own. Levels in human blood average around 200 ng/mL at age 20, but drop to roughly 80 ng/mL by age 60.[2] That steep decline has made scientists curious about what we might be losing as we age — and whether restoring GHK-Cu levels could support tissue health.

Researchers study GHK-Cu as a research-use-only compound. It is not approved as a drug or medical treatment, and nothing on this page should be read as medical advice.

How GHK-Cu Works

Think of GHK-Cu as a tiny construction foreman for your tissues. When it shows up at a site of damage or aging, it signals cells to start rebuilding — ordering more collagen (the scaffolding protein in skin), more elastin (the stretchy protein that keeps skin supple), and more glycosaminoglycans (the gel-like filler between cells).[1]

The copper part matters too. Copper is an essential mineral that enzymes use to build and cross-link collagen. By delivering copper directly to cells that need it, the GHK tripeptide may turbocharge those repair enzymes.[6] Researchers have also found that GHK-Cu can tell cells to grow new blood vessels (angiogenesis) and sprout new nerve fibers — two things any healing tissue desperately needs.[1]

At a genetic level, studies suggest GHK-Cu influences hundreds of genes at once — dialing up repair pathways and dialing down inflammation signals like NF-κB, a molecular switch linked to many aging-related diseases.[1]

What the Research Shows

Most of the exciting findings on GHK-Cu come from in vitro (cell culture) and in vivo (animal) studies. Here's what researchers have found so far:

  • Skin remodeling: GHK-Cu stimulates dermal fibroblasts — the skin cells that churn out collagen and elastin — and has been shown in cellular studies to reduce wrinkle formation. However, researchers note a surprising shortage of rigorous clinical trials on topical GHK-Cu products, despite their widespread commercial use.[3]
  • Wound healing: GHK-Cu has demonstrated wound-healing and anti-inflammatory effects across multiple tissue types, including skin, lung connective tissue, bone, liver, and stomach lining.[1] A 2020 review described it as having "prominent antioxidant and anti-inflammatory effects" in preclinical models.[2]
  • Anti-aging potential: Because blood levels fall so sharply with age, researchers are exploring whether supplementing GHK-Cu could slow some aspects of tissue aging. Early animal data even hint at cognitive benefits, with preliminary observations suggesting GHK may partially reverse cognitive impairment in aging mice via anti-inflammatory and epigenetic pathways.[2]
  • Orthopaedic research: Sports medicine researchers are looking at injectable peptide therapies for musculoskeletal injuries. A 2026 review noted GHK-Cu's promise in wound healing and anti-inflammatory effects, while emphasizing that no clinical data yet support its use for joint or muscle conditions in humans.[4] Another 2026 orthopaedic review described GHK-Cu as promoting integrin-mediated extracellular matrix remodeling and fibroblast activation in preclinical work.[5]
  • Chemistry of copper binding: Lab studies show that GHK doesn't always bind copper alone. It can form a three-part complex with another skin molecule called cis-urocanic acid, and researchers believe this trio may account for some of GHK's biological effects in living tissue.[6]

Bottom line: The preclinical picture is compelling. Large, well-controlled human trials are still needed before any clinical claims can be made.

What GHK-Cu Is Being Studied For

  • Skin repair, wrinkle reduction, and anti-aging skincare formulations[3]
  • Wound healing across multiple tissue types[1]
  • Anti-inflammatory and antioxidant effects[2]
  • Musculoskeletal and connective tissue repair in sports medicine research[4][5]
  • Cognitive aging in preclinical models[2]
  • Gene regulation and proteasome (cellular cleanup) activation[1]

How GHK-Cu Is Dosed in Research

Because most GHK-Cu research has been conducted in cell cultures or animal models, there are no established or validated human dosing protocols. A 2026 sports medicine review stated plainly that "information regarding the indications, dosing, frequency, and duration of treatment remains unknown" for peptides including GHK-Cu.[4] For reference values drawn from preclinical literature, see the dosage chart on this page, and use our calculator to explore common research-use concentration math. Nothing here constitutes a dosing recommendation for humans.

Mixing and Storing GHK-Cu

In research settings, lyophilized (freeze-dried) GHK-Cu powder is typically reconstituted with bacteriostatic water or sterile saline. Because GHK-Cu is a copper chelate, it can react with certain materials — use glass or polypropylene vials rather than metal-containing equipment to avoid unwanted reactions. Once dissolved, store the solution in a refrigerator (2–8 °C) protected from light, and use it within a timeframe consistent with your lab's sterility protocols. Unopened lyophilized powder can generally be stored frozen for longer periods. Always follow your institution's guidelines for handling and disposing of peptide research compounds.

Sources

  1. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. — International journal of molecular sciences, 2018. PMID 29986520.
  2. The potential of GHK as an anti-aging peptide. — Aging pathobiology and therapeutics, 2020. PMID 35083444.
  3. Topically applied GHK as an anti-wrinkle peptide: Advantages, problems and prospective. — BioImpacts : BI, 2025. PMID 39963574.
  4. Injectable Peptide Therapy: A Primer for Orthopaedic and Sports Medicine Physicians. — The American journal of sports medicine, 2026. PMID 41476424.
  5. Therapeutic Peptides in Orthopaedics: Applications, Challenges, and Future Directions. — Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews, 2026. PMID 41490200.
  6. Ternary Cu(II) Complex with GHK Peptide and Cis-Urocanic Acid as a Potential Physiologically Functional Copper Chelate. — International journal of molecular sciences, 2020. PMID 32867146.

GHK-Cu FAQ

What is GHK-Cu?
GHK-Cu is a naturally occurring tripeptide — three amino acids (glycine, histidine, lysine) bound to a copper ion — found in human blood. Levels are highest in young adults and decline significantly with age.[2] Researchers study it as a research-use-only compound for its potential roles in skin repair, wound healing, and tissue remodeling. It is not an approved drug or medical treatment.
How does GHK-Cu work?
GHK-Cu signals skin and repair cells to produce more collagen, elastin, and glycosaminoglycans — the structural proteins and fillers that keep tissue healthy.[1] The copper component assists enzymes that build and cross-link those proteins.[6] GHK-Cu also appears to influence hundreds of genes, dialing up repair signals and quieting inflammation pathways like NF-κB.[1]
What is GHK-Cu used for in research?
Researchers are exploring GHK-Cu for skin remodeling and wrinkle reduction[3], wound healing across skin, lung, and other tissues[1], anti-inflammatory and antioxidant effects[2], and musculoskeletal repair in sports medicine contexts.[4][5] Preliminary animal data also point to possible cognitive aging benefits.[2] All findings are preclinical or early-stage.
How is GHK-Cu dosed?
There are currently no validated human dosing protocols for GHK-Cu. A 2026 sports medicine review noted that dosing, frequency, and duration of treatment "remain unknown" for this peptide.[4] Research concentrations vary widely across studies. Check the dosage chart on this page for reference ranges from preclinical literature, and use the calculator for concentration math.
How do you reconstitute GHK-Cu?
Lyophilized GHK-Cu powder is typically dissolved in bacteriostatic water or sterile saline for research use. Use glass or polypropylene vials — avoid metal contact, since GHK-Cu is a copper chelate and can react with metals.[6] Store reconstituted solution refrigerated (2–8 °C), protected from light, and follow your institution's sterility and disposal guidelines.
Is GHK-Cu safe?
GHK-Cu is a molecule the human body produces naturally, and preclinical studies have not flagged major toxicity concerns.[2] However, large human safety and efficacy trials are still lacking. A 2026 review stressed that "significant research regarding the safety and efficacy of these therapeutic methods is required before definitive recommendations can be made."[4] GHK-Cu is a research compound only — consult a qualified professional before any human use.