The effect of tripeptide-copper complex on human hair growth in vitro.
PEPTIDE RESEARCH TOPIC
AHK-Cu Research Peptide
Explore AHK-Cu research, copper-tripeptide identity, hair-follicle and dermal-papilla experiments, evidence limitations, and comparisons with GHK-Cu.
TOPIC OVERVIEW
About AHK-Cu
Identity and names
AHK-Cu denotes a copper complex of alanyl-histidyl-lysine. AHK and GHK have different amino-acid sequences and should not be treated as synonyms.
Compound type
It is a copper-tripeptide complex. Copper coordination, salt form, purity, and formulation affect how a material should be characterized.
Mechanism
Experimental research examines dermal papilla cell behavior and isolated human hair follicles. Those models investigate biological responses rather than clinical hair regrowth.
Research focus and evidence
A directly relevant study used ex vivo follicles and cultured cells. This is human-derived laboratory evidence, not a randomized trial in people.
Regulatory status and limits
Laboratory findings do not establish the effectiveness or safety of a finished topical or injectable product. Clinical claims require formulation-specific human evidence.
Topics covered
- copper-tripeptide identity
- hair-follicle models
- AHK-Cu versus GHK-Cu
- formulation evidence
Common names and related terms: AHK-Cu, AHK copper, Alanyl histidyl lysine copper
RESEARCH SUMMARY
What Is AHK-Cu?
LAST VERIFIEDOctober 7, 2026
A 2007 study evaluated AHK-Cu in isolated human hair follicles and cultured dermal papilla cells. The use of human tissue does not make the experiment a clinical trial of hair-loss treatment. Pyo et al., hair-follicle and cell study
The same investigation provides a starting point for reviewing concentration-dependent cellular and follicular responses. Its findings should not be extended to other copper peptides, finished products, or injection protocols. Pyo et al., experimental scope and limitations
EVIDENCE PROFILE
AHK-Cu Research Evidence
A concise view of registered clinical research, PubMed-indexed literature, evidence stage, and important limitations.
LAST VERIFIEDOctober 7, 2026
Registered records0
Active studies0
Completed studies0
PubMed records2
Compound typeIt is a copper-tripeptide complex. Copper coordination, salt form, purity, and formulation affect how a material should be characterized.
AliasesAHK-Cu, AHK copper, Alanyl histidyl lysine copper
Evidence stageA directly relevant study used ex vivo follicles and cultured cells. This is human-derived laboratory evidence, not a randomized trial in people.
U.S. regulatory contextLaboratory findings do not establish the effectiveness or safety of a finished topical or injectable product. Clinical claims require formulation-specific human evidence.
Selected registered research
No matching intervention record was found in ClinicalTrials.gov during this verification. This does not mean that no research exists.
Selected PubMed records
How to interpret this profile
Registry and publication counts describe discoverable records, not proof of effectiveness or safety. Study design, compound identity, population, endpoints, and regulatory context must be reviewed individually.
START HERE
Essential AHK-Cu guides
What Is AHK-CU Peptide? Copper Tripeptide GuideWhat is AHK-CU peptide? Learn how this copper tripeptide-3 works in skincare and lab research, what studies suggest, and key safety basics to know.How to Use AHK-Cu: A Research GuideLearn how to use AHK-Cu safely in research: reconstitution math, bacteriostatic water ratios, storage, and topical handling for lab and cosmetic studies.AHK-Cu Peptide Benefits: What Research ShowsAHK-Cu peptide benefits center on skin and hair research. Learn what AHK-Cu peptide is used for, how it compares to GHK-Cu, and key safety notes.
AHK-CU KNOWLEDGE ARTICLESPage 1 of 1
KNOWLEDGE ARTICLE
↗What Is AHK-CU Peptide? Copper Tripeptide Guide
What is AHK-CU peptide? Learn how this copper tripeptide-3 works in skincare and lab research, what studies suggest, and key safety basics to know.
KNOWLEDGE ARTICLE
↗AHK-Cu Peptide Reconstitution: Step-by-Step Guide
AHK-Cu peptide reconstitution explained: how to mix lyophilized powder with bacteriostatic water, calculate dosing units, and store the solution safely.
KNOWLEDGE ARTICLE
↗How to Make AHK-Cu Hair Serum: Safe DIY Recipe
Learn how to make AHK-Cu hair serum at home with a simple copper peptide recipe, proper dilution, and safe storage tips in small batches.
KNOWLEDGE ARTICLE
↗AHK-Cu Dosage: Injection Protocol & Dosing Chart
AHK-Cu dosage ranges from 0.5 to 2 mg per injection in most research protocols, but no FDA-approved human dose exists. See charts, timing, and safety notes.
KNOWLEDGE ARTICLE
↗AHK-Cu Topical: Copper Peptide for Hair & Scalp
AHK-Cu topical peptide serums are marketed for hair and skin, but human evidence is thin. Compare AHK-Cu vs GHK-Cu and minoxidil, plus typical usage and safety.
KNOWLEDGE ARTICLE
↗AHK-Cu Injection: Peptide Guide, Dosing, and Safety
AHK-Cu injection is a research peptide studied for hair and skin, but it is not FDA-approved. Learn what it is, typical dosing, safety, and risks.
KNOWLEDGE ARTICLE
↗AHK-Cu Hair Growth: What the Peptide Actually Does
AHK-Cu hair growth research is promising but early. Learn how this copper peptide works, how it compares to GHK-Cu and minoxidil, and what to know first.
KNOWLEDGE ARTICLE
↗How to Use AHK-Cu: A Research Guide
Learn how to use AHK-Cu safely in research: reconstitution math, bacteriostatic water ratios, storage, and topical handling for lab and cosmetic studies.
KNOWLEDGE ARTICLE
↗Where to Buy AHK-Cu: Safe Sourcing Guide
Wondering where to buy AHK-Cu? Compare reputable suppliers, forms, COAs, and storage tips so you can source this copper peptide safely in the US.
KNOWLEDGE ARTICLE
↗AHK-Cu Hair Serum: Benefits, Dosage, and Safety
AHK-Cu hair serum is a copper peptide topical used for hair growth. Learn what it does, typical dosage, safety, and how it compares to minoxidil.
KNOWLEDGE ARTICLE
↗AHK-Cu Shampoo: Copper Peptide Hair Growth Guide
AHK-Cu shampoo is a rinse-off copper peptide cleanser marketed for thinning hair. Here's what the evidence says, how to use it, and what to check on the label.
KNOWLEDGE ARTICLE
↗AHK-Cu vs GHK-Cu: Reddit's Copper Peptide Debate
AHK-Cu vs GHK-Cu Reddit threads often disagree, so here's what research and user reports say about these copper peptides for topical hair and skin care.
KNOWLEDGE ARTICLE
↗AHK-Cu vs Minoxidil: Which Grows Hair Better?
AHK-Cu vs minoxidil comes down to evidence, FDA status, and safety. Compare how each works, what research shows, and which option doctors recommend.
KNOWLEDGE ARTICLE
↗AHK-Cu Powder: What It Is, Uses, and Safety
AHK-Cu powder is a copper tripeptide studied for skin and hair research. Learn what it is, typical dosing, handling, and safety considerations.
KNOWLEDGE ARTICLE
↗AHK-Cu Peptide Benefits: What Research Shows
AHK-Cu peptide benefits center on skin and hair research. Learn what AHK-Cu peptide is used for, how it compares to GHK-Cu, and key safety notes.
KNOWLEDGE ARTICLE
↗AHK-Cu Before and After: What to Expect
Explore AHK-Cu before and after results for hair and skin, including typical timelines, factors that affect outcomes, and safety considerations.
KNOWLEDGE ARTICLE
↗AHK-Cu Reddit: What Users Say About the Copper Peptide
Curious about ahk-cu reddit threads? Here's what users say about this copper peptide for hair and skin, plus dosage, safety, and real results.