AHK-Cu is a copper-carrying tripeptide, a close cousin of GHK-Cu with a distinctly hair-focused profile. Research describes it stimulating dermal papilla cells and promoting VEGF-driven angiogenesis around hair follicles. Standalone hair-regrowth evidence is modest, and the guide describes it as best used as an adjunct rather than a standalone.
- Stimulates dermal papilla cells.Peptide Guide (PubMed)
- Promotes VEGF-driven angiogenesis around hair follicles, building the blood supply a growing hair runs on.Peptide Guide (PubMed)
- Carries copper the way GHK-Cu does, but the research profile leans toward hair growth and shaft thickness.Peptide Guide (PubMed)
- Comes with a built-in freshness readout: bright blue signals an intact copper complex, faded or brown means it is spent.Peptide Guide (PubMed)
- Community estimates put working potency of a mixed serum near 2 to 4 weeks, limited by copper oxidation.r/Peptides community estimate