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It can up-regulate the expressions of vascular endothelial growth factor (VEGF) and epidermal growth factor (EGF), and enhance the mucosal barrier function
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You can use many topical GHK-Cu products daily, but your ideal frequency depends on the product strength and your skins response
Some studies show a skin-lightening benefit as well, due to direct and indirect inhibition of the tyrosinase enzyme and switching from eumelanin to phaeomelanin production
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