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Alternatively, systemic abdominal injection allows the peptide to migrate to the carpal tunnel area

doi: 10.1093/sleep/zsy018 12 BelmonLSBrasserFBBuschVvan StralenMMHarmsenIAChinapawMJM

It helps your body detoxify, boosts immunity, and promotes healthy skin

GHK-Cu was first isolated from human plasma by Loren Pickart in 1973 and identified as the factor responsible for old human liver tissue behaving like young tissue in cell culture assays

This may be due to copper's ability to enhance the expression of metalloproteinases (MMPs).16 MMPs normally regulate the degradation of collagen, and a specific one, MMP-1, may be responsible for the initiation of collagen fragmentation.17 Supporting this, a 2024 study noted that elevated MMP-1 levels appear to contribute to aging skin and that higher MMP-1 levels in mice led to:18 The loss and fragmentation of dermal collagen fibrils Contracted fibroblast morphology Reduced collagen production Increased expression of pro-inflammatory mediators Additionally, a 2016 study found that GHK-Cu significantly increased gene expression of MMP-1 and MMP-2 at the lowest concentration, which the studys authors considered to be one of the reasons the peptide was able to increase collagen and elastin production.19 So, what this could ultimately mean is that using too much GHK-Cu (or other copper peptides) may in theory increase the skins MMP-1 concentration above the levels involved in healthy collagen production, taking it into the collagen fragmentation and breakdown territory seen in older skin with naturally higher MMP-1 levels