AHK-Cu (Alanyl-Histidyl-Lysine-Copper) is a synthetic copper-binding peptide that offers multiple health and cosmetic benefits, primarily focused on skin regeneration, hair growth, and anti-aging. 
Hair Growth & Scalp Health: AHK-Cu strongly stimulates hair follicles by prolonging the anagen (growth) phase, inhibiting DHT (a hormone linked to pattern hair loss), and supporting dermal papilla cell proliferation. It enhances blood flow via VEGF (vascular endothelial growth factor) activation and reduces scalp inflammation, creating an optimal environment for hair regrowth. 
Skin Regeneration & Anti-Aging: It boosts collagen and elastin synthesis, improves skin elasticity, and promotes extracellular matrix (ECM) production. AHK-Cu also exhibits antioxidant and anti-inflammatory properties, neutralizing free radicals and reducing oxidative stress—key factors in premature aging. 
Wound Healing & Tissue Repair: By activating fibroblasts and promoting angiogenesis (new blood vessel formation), AHK-Cu accelerates tissue repair, making it valuable in post-procedure skincare and scar reduction. 
Stability Advantage: Compared to GHK-Cu, AHK-Cu is more stable and less prone to enzymatic breakdown, ensuring longer-lasting activity in formulations. 
Formulation Use: Available in powder (99% pure) and liposomal liquid forms (7% and 10%), it is ideal for serums, scalp treatments, and creams. Typical use concentrations range from 0.1% to 2%. 
Note: While AHK-Cu is generally safe, potential side effects include mild irritation or rare allergic reactions. A patch test is recommended before use.