AHK-Cu, also known as Copper Tripeptide-3, is a synthetic copper-binding tripeptide with the sequence alanyl-histidyl-lysine, studied in hair-follicle and skin research. It is supplied as a high-purity lyophilized powder, >=99% by HPLC, in sealed vials for cosmetic raw-material research. AHK-Cu is investigated in topical-formulation research for its potential in hair-follicle biology, skin regeneration and copper-dependent cellular processes, and is commonly applied in cell-based and formulation studies. The lyophilized format ensures high stability and easy reconstitution for reproducible experimental dosing. Strict quality control is applied to every batch, and COA is available for specific batches on request. Keep the unopened product sealed at 2-8 degree C away from light; -20 degree C is recommended for long-term storage avoiding repeated thawing. Small and bulk orders are both welcome, and OEM and discreet neutral packing are offered. For laboratory research use only.