AHK-Cu
Quick facts
- Researched for
- Thinning hair and scalp support
- Route or form
- Topical
- Evidence so far
- One lab study in a dish, and commentary based on what others say.
- Not established
- No strong human trial has shown real hair regrowth yet.
- Commonly researched
- Around 1% in a topical scalp serum, usually once dailyCommunity reportsSee every range
- Where to get it
- No product link here.See why in Next step
By the Learn Peptides editorial team · Updated · How We Research
What people are researching it for
People are researching AHK-Cu mainly for thinning hair and scalp support.
Reasons people look into AHK-Cu. An interest is not a promise that it works.
- Skin, hair & tanning
People mostly report on hair, with split results: some see new growth, others nothing.
Community reports
Community interest is mostly and hair-focused, especially thinning hair and scalp support. Real-world reports are much thinner than the discussion around GHK-Cu.
Community reports
AHK-Cu is a copper peptide close cousin of GHK-Cu that people apply to the scalp, usually with microneedling, hoping to regrow thinning hair. Reports are real but genuinely split: some people see new baby hairs and thicker patches after a couple of months, others notice nothing, and almost everyone is also doing several other things to their hair at the same time.
Only one lab study so far, on human hair roots and cells in a dish.
In one lab study, human hair follicles and their supporting cells grew faster with AHK-Cu in a dish.
What this is based on
- Cell / in vitroSeen in cells in a lab dish. An early signal, not proof it works in the body.
- Community reportsWhat people describe noticing. Not proof of cause.
- Industry perspectiveCommentary from practitioners and the industry, based on experience. Not a study.
- Learn Peptides explanationOur own plain-English summary of the sources. It is not a source itself.
No strong human trial has shown real hair regrowth yet.
Strong human trials showing real-world hair regrowth are still missing.
Safety notes
Seen in cells in a lab dish. An early signal, not proof it works in the body.
- Wilson's disease or another copper-handling condition. Like GHK-Cu it delivers copper, which people with Wilson's disease cannot clear.
Questions to bring to your doctor
Only for the conditions this page cautions about. Bring this page with you.
- Does my copper condition rule out AHK-Cu?
Shows the serum strength people report for the scalp, not an injection amount.
Commonly researched ranges, and how they were measured.
Commonly researched range for AHK-Cu
Around 1% in a topical scalp serum
usually once daily · Topical
Community reports
Broader community formulations commonly discuss roughly 1 to 3%. This is a strength for a serum used on the skin, not an injection amount.
Next step
No partner product
We have no US Precision Peptides listing for AHK-Cu, so there is no product link. That says nothing about the research.
About product links
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