EDITORIAL / WHO WE ARE
About GHK-Cu Legit
A sourced reading of the copper-tripeptide literature — a buyer's skepticism applied to every claim, and a citation behind every number.
What this site is
GHK-Cu Legit is a sourced reading of the published copper-tripeptide science: it summarizes the peer-reviewed literature on GHK-Cu, the copper tripeptide also labelled Copper Tripeptide-1. It runs no clinic and keeps no clinical staff; it gives no medical advice and recommends no dose; and it makes, stocks, and sells nothing. What it does is read papers and show the source behind each figure.
The name carries the word 'legit' because that is the lens, not a claim about our services. A great deal of what circulates about copper peptides online is marketing copy dressed as evidence. This site does the opposite job: it reads the published record claim by claim and shows the source behind each number, so a reader can tell a sourced statement from a sold one.
How we read the record
Every quantitative statement on this site maps to a numbered citation on the GHK-Cu references and citations page — a real study with a DOI or PubMed identifier. When the evidence is strong, such as the 1988 fibroblast collagen dose-response [1] or the 2016 hair-count trial [4], we say so plainly. When it is thin — validated human pharmacokinetics, controlled scar-fading data — we mark the gap instead of filling it with confident prose.
We also keep one chemical distinction visible throughout: GHK (the free tripeptide) and GHK-Cu (the copper chelate) are not interchangeable, and copper coordination is required for most of the documented matrix activity [1]. Conflating them is one of the most common ways copper-peptide claims drift from their sources.
The 'legit' framing extends to sourcing chemistry itself: an intact GHK-Cu solution is blue-violet, the color of the copper(II) complex, while brown or green indicates oxidation [6]. Research consumers who evaluate copper peptides look for that signal, along with third-party certificates of analysis that resolve to CAS 89030-95-5 — due-diligence habits this site describes without endorsing any specific source.
What we are not
No clinic, no pharmacy, no storefront, and no inventory sits behind this page. The 'doctor' or 'clinic' style of framing is an editorial position relative to the literature — where a reader stands to weigh it — never an offer of a medical service. There is no consultation here, no prescription, no treatment. GHK-Cu has no FDA- or EMA-approved therapeutic indication by any route; topical Copper Tripeptide-1 is a legal cosmetic ingredient, while systemic use is unapproved and research-only. This site describes that status; it does not advise on it.