AHK-Cu
$Cosmetic/topical hair and skin peptide; Systemic PK not established
AHK-Cu is a copper-binding tripeptide used mainly in topical scalp and skin products. It is discussed for hair-follicle signaling and dermal remodeling, not for whole-body hormone effects.
The evidence is strongest as local cosmetic or dermatologic mechanism work. Claims about systemic regeneration or injectable hair restoration should be treated as lower-certainty unless tied to a specific clinical formulation. Focus on formulation, concentration, pH, and irritation.
Separate AHK-Cu from GHK-Cu, because the two are related copper peptides but are not interchangeable.
Classification details
- AHK-Cu is L-alanyl-L-histidyl-L-lysine complexed with copper.
- It is usually grouped as a signal peptide and copper-delivery complex.
- In practical use it appears mostly in topical scalp serums, cosmetic formulations, and some provider-supervised mesotherapy contexts.
- AHK-Cu is best framed as a copper-binding tripeptide cosmetic/hair-research compound. It is close in theme to GHK-Cu but is not interchangeable with it, because sequence, target tissue, formulation, and evidence base differ.
- Proposed mechanisms include support of dermal-papilla cell activity, wound-healing signaling, angiogenic signaling around follicles, and extracellular-matrix remodeling.
- Because copper complexation is central to the molecule, formulation pH and oxidation state matter.
- The practical mechanism is local copper-peptide signaling around follicle and skin biology, not systemic endocrine action. The relevant claims center on extracellular-matrix remodeling, follicle-support hypotheses, and local tissue signaling.