Copper is an important cofactor for enzymes involved in: Collagen cross-linking Antioxidant defense Wound repair Extracellular matrix remodeling GHK-Cu appears to support: Collagen synthesis Elastin production Glycosaminoglycan production Angiogenesis Antioxidant activity Matrix metalloproteinase regulation Why GHK-Cu is popular in aesthetics: GHK-Cu is commonly discussed in skin rejuvenation because it may support skin thickness, elasticity, firmness, wound repair, hair follicle signaling, reduced inflammation, and improved skin texture
In fact, it actually lightens skin and gives that youthful glow
Tranexamic acid is more targeted toward reducing hyperpigmentation, while Vitamin C is better suited for general skin health and reducing all visible signs of ageing, which includes pigmentation
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While these findings are promising, the complexity of human neurodegenerative diseases and the limitations of animal models necessitate cautious interpretation pending clinical validation