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GHK-Cu for skin and hair Alcohol dehydrates the skin, increases inflammatory cytokines, and disrupts collagen synthesis

10.1038/s41419-017-0033-4 78 YuH.ZhangC.ZhangX.WangC.LiP.LiuG.et al (2020)
[DOI] [PubMed] [Google Scholar] 25

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If you observe any signs of cloudiness, particulate matter, discoloration, or structural damage to the vials seal, discard the container immediately
They act as both neuromediators and metabolites in nervous tissue