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GHK consists of glycine, L-histidine, and L-lysine in sequence (Gly-His-Lys)

For in vitro studies, it is typically dissolved in DMSO or aqueous buffer depending on the experimental protocol

A separate 2025 pilot evaluated intravenous infusion at 10 mg and 20 mg in two adults with no adverse effects on organ biomarkersbut two subjects do not constitute a trial

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It is used in soaps, lotions, creams, serums to improve skin texture and rejuvenate the glow