SECTION 08 / ABOUT
About this GHK-Cu research review
An independent editorial readout of the published GHK-Cu literature — what it is, what it is not, and how it is sourced.
What This Project Is
Reviews GHK-Cu is an independent editorial project that publishes summaries of the peer-reviewed research literature on GHK-Cu, the copper tripeptide also labeled Copper Tripeptide-1. We are not a clinic. We do not employ clinicians and we do not provide medical advice. We do not manufacture, sell, or distribute any product. Our work is editorial commentary on publicly available science.
The format is deliberate. GHK-Cu's research record is unusually numeric for a research peptide — collagen onset at picomolar concentrations [1], a 25.4-fold collagen-IV rise with hyaluronic acid [7], procollagen up in 70% of subjects against 40% for retinoic acid [3], a gene-modulation signature touching roughly a third of human genes [2] — so we present it the way a product readout presents a feature set: the established findings forward, each tied to a study, and the gaps marked as gaps rather than smoothed over.
On the Word 'Reviews'
The 'reviews' in our name means a literature review, not a star-rated buying guide. We review the published research on GHK-Cu — the studies, their methods, and their limits. We do not rank products, recommend brands, or link to vendors. Where the evidence is strong, such as the in-vitro collagen dose-response [1] or the human penetration depot [5], we say so plainly. Where it stops, such as the absence of validated human pharmacokinetics for systemic GHK-Cu [11] or the single-investigator concentration of much of the foundational review literature, we say that just as plainly.
We also keep two distinctions visible that the wider conversation often blurs: the difference between the free peptide GHK and the copper complex GHK-Cu [6], and the difference between in-vitro or rodent findings and controlled human evidence. A confident readout is only useful if its confidence is calibrated.
How We Source
Every quantitative claim on this site maps to a numbered citation on the references page, drawn from PubMed, PMC, and peer-reviewed journals. We cite the primary study wherever possible and note when a figure comes from a review or a database analysis rather than a direct measurement [2]. We do not publish doses as recommendations; where the research administered a compound, we describe what was given, to which species or model, by which route, and at what concentration — as study context, never as guidance for use. The compound is a research peptide, and topical Copper Tripeptide-1 is a cosmetic ingredient; this site documents the research record and nothing more.