AHK-Cu is a copper peptide made from the amino acids alanine, histidine and lysine, discussed for hair and skin use. It is not approved as a drug, and its only study results so far come from lab cells, on skin and hair. PepBank shows 6 results on AHK-Cu from animal and lab studies. No study in people has reported results yet. Data as of 2026-10-30.
Also known as AHK-Cu, Ala-His-Lys copper complex
| What it is | Metal complex, 3 amino acids |
|---|---|
| Approval | Not approved for any use |
| In sport | Status unknown |
| Studies | 1 study with results. It gave AHK-Cu, with 6 results. 6 in lab cells |
| Clinical trials | None registered |
| Community use | Scalp hair and skin appearance |
A copper complex of Ala-His-Lys discussed for topical hair and skin use.
Amino acids in one chain
The key facts about the molecule. Long codes are in the closed section below.
Results grouped by what the studies measured. Each card shows where its results come from.
In lab tests, AHK‑Cu stimulated human hair follicle elongation. Archives of pharmacal research, 2007
Studies in people come first, then studies in animals and in the lab.
No approved medicine contains it.
No approved medicine contains it.
Status unknown.
No. Not approved for any use. The FDA, the EMA and the other sources we use show no approval (as of 21 Oct 2026). Status unknown.
Laws and labels change, so check the regulator for the current status.
PepBank has no safety result from studies of AHK-Cu yet. That does not mean AHK-Cu is safe.
What people report online. It comes from forums and guides, not from studies.
The source describes topical cosmetic use. These reports do not establish a safe or effective concentration.
| Context | Route | Amount | How often | How long | Agreement | Sources |
|---|---|---|---|---|---|---|
| Reported scalp serum | topical scalp application | 0.1 to 0.2 % per finished serum volume (AHK-Cu powder, % w/v) | once or twice daily | Not stated | Single source. The source carries seller links. | S1 |
Gaps
Underlying user reports were not independently checked. Source statements do not establish safety, efficacy, or an approved dose.
The answer links to every study it uses.
AI wrote and checked these results. AI can make mistakes, so check important results against the source.
PepBank is a research reference. Talk to a doctor before you use any peptide.
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In PepBank now:147 peptides, 6 blends and 13 other compounds97,577 study results from 17,383 studies8,473 clinical trialsUpdated