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GHK-Cu Topical (Creams and Serums): What Studies Show

Which studies gave GHK-Cu as a topical form, what they measured, and what is approved. No product recommendations.

Medical review pendingCopper tripeptideUpdated
Route
topical
FDA-approved product for this route
None
Route studies (human / animal)
3 / 1
in our evidence file (PubMed search, 11 Oct 2026)

Studies that gave GHK-Cu topical

Each row is a study whose stated route matches. Animal and cell results are labelled and are not human results.

GHK-Cu studies by topical route
StudyDesignnDoseFirst outcome
Archives of facial plastic surgery 2006, PMID 16847171Human RCT13Not statedErythema resolution: No significant difference between groups in erythema resolution on computer analysis and blinded evaluation.
Wound repair and regeneration 1994, PMID 17147644Human RCTNot statedNot statedPlantar ulcer closure: Median ulcer area closure was 98.5% with the GHK-copper gel versus 60.8% with vehicle (p < 0.05).
Journal of cosmetic and laser therapy 2016, PMID 27064823Human case report1Not statedCrow's feet wrinkles: In one patient, photographs showed greatly decreased wrinkles around the treated eye after a multi-ingredient cosmetic treatment.
Veterinary surgery 2003, PMID 14648529Animal · rat (not a human result)24Not statedWound area reduction: By day 13 wound area had decreased by 64.5% with topical tripeptide-copper, 45.6% with vehicle and 28.2% in untreated controls.

For the injected form, see GHK-Cu how to inject and GHK-Cu half-life.

The three human topical reports and what each tested

A small randomized trial put GHK-Cu skin care on CO2 laser-resurfaced skin and compared it against the same regimen without it.[1]

The trial's questionnaire, but not its objective scores, favoured the GHK-Cu group.[1]

A multicenter, placebo-controlled study tested a metered daily gel on diabetic foot ulcers after debridement.[2]

A single-patient report paired a copper-GHK cosmetic mixture with a micro-droplet resurfacing device once a week over a treatment course, and noted no adverse effect.[3]

Whether the peptide reaches its target through skin

A review of topical GHK says information on skin permeability and effectiveness of the GHK-Cu form is insufficient.[5]

The same review reports that complexing with metal raises permeability.[5]

A systematic review says microneedle delivery has raised skin uptake in lab and pig-skin models but has not reached a registered, adequately powered human trial.[6]

Animal topical data

In rats with ischemic open wounds, topical gel-treated wounds had lower TNF-alpha and matrix metalloproteinase concentrations than untreated wounds.[4]

Common questions

Is there an FDA-approved topical form of GHK-Cu?

We found no FDA-approved topical product for GHK-Cu in our evidence file. Products sold as topical forms are not checked by the FDA.

Have studies given GHK-Cu as a topical form?

4 studies in our evidence file gave GHK-Cu by a topical route: 3 in people and 1 in animals.

Does a copper peptide serum work on wrinkles?

In the one randomized trial in this evidence, all participants improved after laser resurfacing, with or without the copper peptide.[1]

More on GHK-Cu

DosageDoses used in published studies, with the source for each.CalculatorVial, water and dose to syringe units.Side effectsWhat labels and studies report, and what is unknown.ResultsStudy outcomes and when they were measured.BenefitsClaimed benefits next to what published studies measured.How it worksTarget, mechanism and how long it acts, from the label or studies.

Sources

  1. 1Effects of topical copper tripeptide complex on CO2 laser-resurfaced skin.Archives of facial plastic surgery · 2006PMID 16847171Accessed 2 Oct 2026
  2. 2Enhanced healing of ulcers in patients with diabetes by topical treatment with glycyl-l-histidyl-l-lysine copper.Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society · 1994PMID 17147644Accessed 2 Oct 2026
  3. 3Significant improvement in crow's feet after treatment with Jet-M and a mixed solution of copper-GHK, oligo-hyaluronic acid, rhodiolar extract, tranexamic acid, and β-glucan (GHR formulation).Journal of cosmetic and laser therapy : official publication of the European Society for Laser Dermatology · 2016PMID 27064823Accessed 2 Oct 2026
  4. 4The effect of topical tripeptide-copper complex on healing of ischemic open wounds.Veterinary surgery : VS · 2003PMID 14648529Accessed 2 Oct 2026
  5. 5Topically applied GHK as an anti-wrinkle peptide: Advantages, problems and prospective.BioImpacts : BI · 2025PMID 39963574Accessed 2 Oct 2026
  6. 6A Systematic Review of the Mechanisms and Therapeutic Applications of GHK-Cu (Glycyl-L-Histidyl-L-Lysine-Copper Complex) in Topical Microneedle Delivery: A Case for Expanded Clinical Trials.Archives of internal medicine research · 2026PMID 42787770Accessed 2 Oct 2026

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