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These recommendations rest on animal studies and practitioner observation rather than controlled human trials
View on PubMed [PubMed] The synergy of GHK-Cu and hyaluronic acid on collagen IV synthesis (2023) Research demonstrating synergistic collagen synthesis effects when GHK-Cu is combined with hyaluronic acid

Epub 2012 Feb 28

Tsao AS, Harun N, Fujimoto J, Devito V, Lee JJ, Kuhn E, Mehran R, Rice D, Moran C, Hong WK, Shen L, Suraokar M, Wistuba I

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