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6 Clinical / topical cosmetic studies (PubMed)Topical copper-peptide trials for skin firmness, fine lines and photoaging the bulk of human GHK-Cu evidence

Gene Regulation: Downregulates senescence markers like p16 (INK4a) and p21 (Waf1), delaying cellular aging

[2], [4] Retro-inverso peptides (also referred to as D-retro-inverso or DRI peptides) are specially engineered molecules in which the amino acid sequence is reversed and composed of D-amino acids, which are mirror images of the naturally occurring L-amino acids

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