AHK-Cu is a synthetic copper-binding tripeptide related to the better-known compound GHK-Cu. Copper is an essential cofactor for collagen cross-linking and wound-healing enzymes, and AHK-Cu was specifically engineered to target hair follicle growth rather than acting as a general tissue-repair signal.
Published research on AHK-Cu itself is limited and almost entirely preclinical, examining its ability to stimulate hair follicle elongation, promote dermal papilla cell proliferation, and increase markers tied to hair-growth signaling in cell and animal studies. No peer-reviewed human clinical trial specific to AHK-Cu was found —its evidence base is notably thinner and less mature than GHK-Cu's.
Sources: Medicina Scientific (Basel) tripeptide review; PMC4508379 (GHK-Cu, related derivative discussion). Findings from published research —not a claim about this product, and not evidence of safety or effectiveness for human use.