Supplement
GHK-Cu
The skin peptide with small human studies.
GHK-Cu is a copper-binding peptide found naturally in human plasma, declining with age. We grade GHK-Cu C- on evidence and C for worth-it at about $20-40 per month.
Evidence
Worth it
Typical cost: $20-40/month
What it does
GHK-Cu is a copper-binding peptide found naturally in human plasma, declining with age. It appears in cosmetic serums and is studied for skin remodeling. A few small human studies exist on skin measures. It is not an approved drug, and injectable products sold online are unregulated.
What the research says
May improve skin firmness and appearance
Evidence: emerging. Small human studies on topical use; needs larger replication.
DRAFT: a handful of small human skin studies; everything beyond skin is speculation.
Is it worth it?
DRAFT: moderate cost; the evidence covers a narrow cosmetic claim.
Typical cost
$20-40/month
Common form, not a brand recommendation
Dosage contextemerging
Topical cosmetic use has no standard dose; no established dosage for any other route.
Safety notes
Topical cosmetic use appears low-risk. Injectable products sold online are unregulated research chemicals. Talk to your doctor before any injectable use. This page is information, not medical advice.
Longevity Lab Report
GHK-Cu news, graded when it happens.
New studies, dose debates, and expert shifts on ghk-cu, in one email a week. Free.
Changelog
Last updated 2026-10-15
- 2026-10-15|Peptide/longevity entry added as DRAFT with research-compound framing where applicable.
- 2026-10-15|Dosage context added.
- 2026-10-15|Goal tags added for the stack builder.
- 2026-10-15|Regulatory: Feb 2026 HHS announcement moved GHK-Cu toward Category 1 (compounding-eligible with prescription). Not among the six in the July 2026 PCAC vote. Not FDA approval. Evidence grade unchanged. Source: https://www.ajmc.com/view/5-things-to-know-about-the-fda-s-peptide-reversal