Skin And Cosmetic Research
GHK-Cu (Copper Peptide)
BioHarmony verdict
Strong recommend
GHK-Cu is a human copper-binding tripeptide with the best evidence for topical skin repair and wound healing, including Mulder 1994 diabetic ulcer data showing 98.5% median closure versus 60.8% vehicle. Systemic injection remains unproven in human trials.
Read full reportWhat is GHK-Cu (Copper Peptide)?
GHK-Cu is the copper-bound form of the human tripeptide glycyl-L-histidyl-L-lysine. Think of GHK as a small carrier peptide and Cu2+ as the copper ion it holds. Together, GHK-Cu acts less like a stimulant and more like a repair signal: it helps deliver copper into contexts where collagen, elastin, glycosaminoglycans, antioxidant enzymes, keratinocytes, fibroblasts, and wound-bed remodeling are already active.
From the BioHarmony report, reviewed 2026-09-08.
Safety watch-outs
- Injection-site infection
- Copper excess symptoms: nausea, metallic taste, abdominal pain
Full risk profile in the BioHarmony report.
Dosing as published
No approved-label or study protocol is recorded for GHK-Cu (Copper Peptide) yet.
More reported protocols
MembersMembers can compare additional reported doses, schedules, and preparation notes.
Educator coverage (5)
Attributed viewpoints, separate from primary research.
- International Peptide Society 2018 Compound CurriculumDr. William Seeds · 2018-07-20
- Peptides to Promote Cellular HealthDr. Suzanne Ferree · 2025-09-15
- Fixing Biology: Mitochondria, GLP-1, EMFs & the Future of Human PerformanceAlex Kikel · 2026-03-04
- The KLOW Stack BPC-157 TB-500 GHK-Cu KPVHunter Williams · 2026-04-08
- GHK-Cu Oral vs Injection: Which Delivery Method Works?Jay Campbell · 2026-06-30
Trust & sourcing
FDA identifies immunogenicity and peptide-impurity concerns for injectable compounded GHK-Cu and notes that human safety data are limited.
Primary sources
- Certain bulk drug substances for use in compounding that may present significant safety risksU.S. Food and Drug Administration · 2026-04-22
Related peptides for recovery & tissue repair
Free guide
The Ultimate Peptides Guide
Spot stronger candidates, weak evidence, and seller red flags before you buy.