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GHK-Cu for Hair: What the Evidence Shows

What human and animal studies show about GHK-Cu for hair, how strong that evidence is, and what is still unproven.

Medically reviewed by Juan Pablo Frías, MD · · DisclosureCopper tripeptideUpdated
Strongest evidence
Human observational
Human studies
4
PubMed records, our ledger
Animal studies
0
PubMed records, our ledger
Studies we summarised
1
with an outcome for hair

Evidence for hair

Each row is an outcome related to hair from a published study, strongest design first. Animal and cell results are labelled and are not human results. User reports are not counted as evidence here.

GHK-Cu for hair: outcomes in published studies
OutcomeResultStudy typeSource
Hair fall (pull test)Hair fall was significantly reduced in 83% of patients on the pull test after injections of a multi-ingredient formulation that included a copper tripeptide (no control group).Human uncontrolled trialn = 1000Journal of cosmetic and laser therapy 2018, PMID 29482481

PubMed records for GHK-Cu and hair: 4 human, 0 animal (search counts, not studies we reviewed). Grades follow our evidence scale.

How strong is it?

Strongest evidence:Human observational evidence, 3 of 4Journal of cosmetic and laser therapy 2018, PMID 29482481

A human randomized trial outweighs any number of animal studies. Animal and cell results show a mechanism worth testing, not that it works in people.

Other peptides people research for hair

HGHSermorelinGLOWTB-500KLOW
All peptides for hair, compared

Common questions

Does GHK-Cu help with hair?

The strongest study we summarise for hair is human observational evidence, across 1 study with an outcome for hair. That is not proof it works in people.

Is GHK-Cu approved for hair?

No. GHK-Cu is not FDA approved for any use, including hair.

What is the best peptide for hair?

There is no single answer. Our hair overview compares each candidate by evidence grade and legal status rather than by popularity.

More on GHK-Cu

DosageDoses used in published studies, with the source for each.CalculatorVial, water and dose to syringe units.Side effectsWhat labels and studies report, and what is unknown.ResultsStudy outcomes and when they were measured.PricePrice per mg and per week from dated listings. No vendor links.Legal statusFDA, compounding and WADA status with dates.

Sources

  1. 1Intradermal injections of a hair growth factor formulation for enhancement of human hair regrowth - safety and efficacy evaluation in a first-in-man pilot clinical study.Journal of cosmetic and laser therapy : official publication of the European Society for Laser Dermatology · 2018PMID 29482481Accessed 2 Oct 2026

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