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As we age, our natural levels of GHK-Cu decline significantly, which can lead to a plateau in skin resilience and hair density

Three clocks converge on it

Because glutathione supports so many cellular functions, healthy levels are often linked to vitality, healthy ageing, and long-term cellular health

Pickart and colleagues (Nature, 1980, PMID 7453802) reported facilitated copper uptake into cultured cells, and Simon and colleagues (Life Sci, 2000, PMID 11045606) reported upregulated MMP-2 alongside its tissue inhibitors in fibroblast culture

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