GHK cu is a copper peptide. It's great for skin, especially when you combine it with other things. My favorite is DMSO and derma rolling. My first experience with copper peptides was Procytes GHK Cu (Copper Peptide) 50mg 99.80% Purity Research Peptide Miro Biotech GHK Cu Liposome Copper Tri Peptide 1 Liquid 10% GHK CU 50mg OP Labs (Formerly Oxford Peptides)
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