Pal-GHK, also known as Palmitoyl Tripeptide-1 and Palmitoyl Oligopeptide, is a synthetic peptide developed to function in protein production to support the skin’s extracellular matrix (ECM), and skin pigmentation. Pal-GHK is a synthetic hybrid peptide with one fatty acid and one peptide. “Pal” represents Palmitoyl—the covalent attachment of fatty acid to the end of the structure. “GHK” represents glycine-histidine-lysine—the peptide’s amino acid structure. This sequence is thought to be a small fraction of the large protein collagen, which is one of the main proteins in the extracellular matrix of skin and other tissues. The GHK sequence appears to be present in the “alpha 2(I) chain of type I collagen”, and researchers suggest that such a “tripeptide might be liberated by proteases at the site of a wound” as a signal of injury and thus, may be a powerful stimulant for repair.[1] Particularly, it may signal and attract fibroblasts—cells responsible for synthesizing collagen, elastin, and other proteins in the skin’s extracellular matrix, bones, and connective tissues. “Pal” represents Palmitoyl—the covalent attachment of fatty acid to the end of the structure. The addition of palmitoyl to the molecule is thought to result in better penetration through skin cells and, more specifically, stratum corneum.[2]
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