Does GHK-Cu improve skin?
Tested on skin after laser treatment: no clear advantage on objective measures of redness, wrinkles or skin quality, but users rated their skin more favorably.
6 of 16 in Every Peptide Explained in 10 Minutes (Human Studies Only)
What the human studies found
- A copper peptide promoted for skin and anti-aging.
- The small study put GHK-copper skin-care products on skin after CO2 laser resurfacing.
- Objective measures (redness, wrinkles, overall skin quality): no clear advantage. Patient ratings: more favorable.
- That doesn’t establish what injecting it would do.
- A new registry record from a sponsor in Shenzhen had no results posted as of October 2, 2026.
The studies (1)
Also cited
- ClinicalTrials.gov NCT07437586 (GHK-Cu, sponsor-submitted, no results posted as of October 2, 2026)
- 2020 paper on GHK as an anti-aging peptide · PubMed 35083444
We checked the human research behind 16 peptides. The question wasn’t just “is there a study?” It was “does that study support the pitch?” For each one: who took part, what was measured, and what actually changed.
Watch all 16, explained: the film on YouTube · 9:42An approval, a trial or a paper belongs to a particular substance and a particular use. None of it verifies the contents of a bottle sold online. This is an investigation of the claims, not a guide to taking them.
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