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GHK-Cu Source

A living digest of the GHK-Cu copper-tripeptide literature — where the matrix-synthesis, gene-expression, and skin-regeneration research grows from one endogenous signal.

/ 08 / THE PUBLISHER

About GHK-Cu Source.

A sourced reading of the copper-tripeptide literature — what it is, what it is not, and how it handles citations.

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What this site is

GHK-Cu Source traces the peer-reviewed research on GHK-Cu — the glycyl-L-histidyl-L-lysine copper(II) complex — back to where each finding came from. The site reads the copper-tripeptide record the way a careful reviewer would: lead with what each study measured, attribute it to its primary source, and mark the places where the evidence is thin or where two forms of the molecule have been conflated.

The name is the method. "Source" means two things at once — GHK-Cu as the endogenous source-signal from which the dermal matrix and repair program grow, and the audited primary literature as the source this site draws from. Neither is a service: no clinician works here, no medical advice is given, and nothing is manufactured, sold, or dispensed. It is a commentary on published science, kept honest on the page.

Why "Source" is editorial framing, not a service claim

The word "source" in the domain is a position this publisher occupies relative to the literature — the origin of a finding and the place a reader can verify it — not a claim that the site supplies a product or a treatment. We do not source, stock, sell, prescribe, or dispense anything. There is no clinic behind the name and no counter behind the page.

That distinction matters because GHK-Cu sits across a regulatory line. Topical Copper Tripeptide-1 is a long-established legal cosmetic ingredient; injectable or systemic GHK-Cu is not approved as a drug by the FDA, EMA, or any other regulatory body, and no validated human pharmacokinetic data exist for systemic use. We describe research findings using "studied at X in [model]" framing throughout, never a human dosing recommendation. Where community protocols circulate without a peer-reviewed basis, we say so.

How we handle citations

Every quantitative claim on this site — every concentration, percentage, gene count, hair-count delta, and stability constant — resolves to a numbered entry on the GHK-Cu research references page, each carrying a DOI and a PubMed or PMC link. We distinguish primary studies from reviews, and we flag when a widely repeated figure (such as the "~4,000 genes" claim) is an extrapolation rather than a measured result [2].

We also note authorship concentration where it bears on confidence: a large share of the foundational GHK-Cu literature originates from a single investigator and colleagues, so we surface the independent corroborations — Campbell 2012 and the Ladiges-group work — explicitly [8][15]. The goal is a digest a skeptical reader can trust because the gaps are visible, not papered over.