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This study identified that GHK-Cu at 1 M concentration could modulate the expression of over 4,000 genes, providing mechanistic insight into its broad biological activity profile

A 12-week facial cream study in 71 women with mild to advanced photoaging showed increased skin density and thickness, reduced laxity, improved clarity, and reduced fine lines and wrinkle depth with strongly stimulated dermal keratinocyte proliferation

The links to cancer-related pathways cannot be ignored, and the absence of human safety data is glaring

For systemic or gut-related protocols, the abdominal fat pad at the navel region is used

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