AHK-Cu (alanyl-histidyl-lysine, copper-bound) is a copper-binding tripeptide related in structure and mechanism to GHK-Cu, but built on a distinct amino-acid sequence. It's studied primarily in dermatological research alongside GHK-Cu, with a comparable focus on antioxidant activity and skin regeneration.
Mechanism, common research protocols, evidence review, and cited primary literature for AHK-Cu live on the full guide.