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Pure GHK is sometimes sold for research purposes or for manufacturers creating custom formulations that require the addition of copper ions separately

GHK-Cu is a tripeptide with a copper ion, composed of glycine, histidine, and lysine, and is found in type one collagen fibers, which are present in skin, hair, and connective tissue, and its discovery is attributed to American researcher Dr

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If any of those are compromised by genetic variants, poor diet, toxins, or stress, the conversion slows or stalls