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In another study with 20 women, GHK-Cu demonstrated superior efficacy compared to vitamin C and retinoic acid in boosting collagen levels in photoaged skin, leading to significant improvements in skin elasticity and texture while showcasing its robust anti-aging properties

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Its primary mechanism involves upregulation of the hTERT gene, which encodes the catalytic subunit of telomerase -- the enzyme that adds TTAGGG repeats to chromosome ends