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GHK-Cu stimulates angiogenesis primarily through upregulation of key growth factors including vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF/FGF-2), with research demonstrating that GHK-Cu at nanomolar concentrations increases VEGF expression in dermal fibroblasts and stimulates human umbilical vein endothelial cell (HUVEC) proliferation through enhanced VEGF and FGF-2 expression

BPC-157 upregulates VEGFR2 expression and promotes receptor internalization, triggering downstream phosphorylation of Akt at specific sites (Ser473 and Thr308)

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Yes, glutathione for skin whitening has been proven safe and effective in numerous clinical studies