THE GHK-CU GUIDE / SOURCE INDEX

Copper chemistry, skin models and human evidence.

A copper-binding experiment, a fibroblast assay, an ex-vivo skin test and a study in people are distinct pieces of evidence. This focused bibliography follows the original papers cited in the GHK-Cu guide rather than treating them as interchangeable demonstrations of benefit.

Use the related article to see why each paper is included. Keep the tested material, formulation, route and measured endpoint attached to the finding. A topical observation does not automatically establish an effect for another product or route.

6 distinct original-paper links cited across 3 guides in this edition. Each link is counted once, even when several articles cite it.

Showing 6 of 6 original-paper links.

GHK-Cu

Original publication

Trapaidze et al. (2012): Copper binding to GHK and DAHK (opens the original source in a new tab)

pubmed.ncbi.nlm.nih.gov

Open the original paper

WHY THIS SOURCE IS HERE

What Is GHK-Cu? The Peptide, the Copper and the Complex
Understand why copper is part of the GHK-Cu identity and why chemical behavior matters when interpreting biological claims.
GHK-Cu Formulations and Routes: Why Evidence Does Not Transfer Automatically
Learn why peptide identity, skin penetration and route-specific safety must be evaluated separately.

GHK-Cu

Original publication

Bossak-Ahmad et al. (2020): Ternary GHK–copper–urocanic-acid complex (opens the original source in a new tab)

pubmed.ncbi.nlm.nih.gov

Open the original paper

WHY THIS SOURCE IS HERE

What Is GHK-Cu? The Peptide, the Copper and the Complex
Understand why copper is part of the GHK-Cu identity and why chemical behavior matters when interpreting biological claims.
GHK-Cu Formulations and Routes: Why Evidence Does Not Transfer Automatically
Learn why peptide identity, skin penetration and route-specific safety must be evaluated separately.

GHK-Cu1988

Preclinical

Stimulation of collagen synthesis in fibroblast cultures by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+ (opens the original source in a new tab)

FEBS Letters

Design: In vitro experiment measuring collagen synthesis in cultured fibroblasts exposed to GHK-Cu.
Population / setting: Fibroblast cultures; no people were treated. The abstract does not provide the number of experimental replicates.
Sample size: Not specified in this summary; consult the paper.

What was observed
GHK-Cu increased collagen synthesis in fibroblast cultures independently of a change in cell number. This supplies a mechanistic observation, not a measured clinical improvement in human skin.

Keep in view
Cell-culture findings cannot establish the benefit or safety of a serum, cream or injectable product. The abstract does not justify a universal percentage increase in collagen or a claim about wrinkles, wound healing or hair growth in people.

Open the original paper

WHY THIS SOURCE IS HERE

What Is GHK-Cu? The Peptide, the Copper and the Complex
Understand why copper is part of the GHK-Cu identity and why chemical behavior matters when interpreting biological claims.
GHK-Cu for Skin: What Topical Research Actually Shows
Read the difference between fibroblast findings, ex-vivo skin tests and a small randomized human study.

GHK-Cu

Original publication

Jiang et al. (2023): GHK-Cu and hyaluronic acid in fibroblast and ex-vivo tests (opens the original source in a new tab)

pubmed.ncbi.nlm.nih.gov

Open the original paper

WHY THIS SOURCE IS HERE

GHK-Cu for Skin: What Topical Research Actually Shows
Read the difference between fibroblast findings, ex-vivo skin tests and a small randomized human study.

GHK-Cu

Original publication

Miller et al. (2006): Randomized study after CO2 laser resurfacing (opens the original source in a new tab)

pubmed.ncbi.nlm.nih.gov

Open the original paper

WHY THIS SOURCE IS HERE

GHK-Cu for Skin: What Topical Research Actually Shows
Read the difference between fibroblast findings, ex-vivo skin tests and a small randomized human study.
GHK-Cu Formulations and Routes: Why Evidence Does Not Transfer Automatically
Learn why peptide identity, skin penetration and route-specific safety must be evaluated separately.

GHK-Cu

Original publication

Hostynek et al. (2010): Human skin retention and penetration in vitro (opens the original source in a new tab)

pubmed.ncbi.nlm.nih.gov

Open the original paper

WHY THIS SOURCE IS HERE

GHK-Cu Formulations and Routes: Why Evidence Does Not Transfer Automatically
Learn why peptide identity, skin penetration and route-specific safety must be evaluated separately.