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Several randomized double-blind clinical trials have been published, evaluating the efficacy of GHK-Cu in topical creams for skin rejuvenation
The FEBS Journal
In addition, it appears that NAD+ protects muscles from metabolic and structural degeneration [13]
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A 12-week facial study on 67 women indicated that GHK-Cu cream applied twice daily improved aged skin appearance, increased thickness, reduced wrinkles and strongly stimulated dermal keratinocyte proliferation as determined by histological analysis of biopsies
