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the injection instructions were also simple to follow
One of the most important of those signals is GHK-Cu a small copper-binding peptide that plays a central role in collagen synthesis, wound healing, and gene-level tissue repair
By potentially supporting skin-related signaling pathways, GHK-Cu serum may also contribute to hydration and a more even, refreshed-looking complexion over time
See the full evidence review for a study-by-study breakdown
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