Skin biology research
GHK-Cu review
What a cell-culture experiment can tell us about skin biology—and what it cannot tell us about visible results.
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Included evidence
Cell-culture study
What was studied
Human fibroblasts grown in a laboratory, rather than people receiving a cosmetic or injection.
What the research found
- GHK-Cu increased production of certain extracellular-matrix molecules in the selected experiment.
Where the evidence stops
- A cellular response does not establish visible wrinkle reduction or hair regrowth in people.
- This study cannot establish whether a particular topical or injectable product works.
Safety context
FDA notes limited human safety data and immune-response concerns for injectable GHK-Cu. Route matters.
Educational information only. This review does not recommend self-treatment or establish that products sold online match a studied formulation. Individual medical decisions belong with a qualified clinician.
Read the sources
These are the documents included in this review. Evidence labels describe this selection; they are not effectiveness or safety scores.
Original research — PubMed abstract
Stimulation of sulfated glycosaminoglycan synthesis by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+. (opens in a new tab)
This is a selected-source editorial review, not a systematic review or a claim of medical review. New findings may change the assessment.
Next editorial check due .
How these reviews are prepared