ghk-cu effects on insulin The Effect of the Human Peptide GHK Gene Expression Relevant to Nervous System Function and Cognitive Decline Can you use copper

Can you use copper peptides with vitamin C? Here's what 10 skincare brands said about layering GHK-Cu copper peptide serums with Vitamin C L-ascorbic acid. I contacted 10 skincare brands and asked

doi: 10.1038/s41467-020-17223-3, 82 MaY.ZhengX.LinY.ZhangL.YuanY.WangH.et al

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Copper Peptides vs Signal Peptides Signal peptides like Matrixyl (Palmitoyl Pentapeptide-4) communicate with cells to increase collagen production