Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum 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 GHK Cu Copper Tripeptide 1 Research Reagent GHK CU Crepey Skin Escape
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