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Is GHK Cu actually worth it? is genuinely one of the most common questions in my comments, so let me finally answer it properly. The short version: copper peptides have real research behind What are the potential adverse effects of using GHK Cu (Glycyl Histidyl Lysine Copper) topical peptides for wound healing? GHK Cu Copper Peptide: The Ultimate Peptide For Longevity Selected Biomarkers Revealed Potential Skin Toxicity Caused by Certain Copper Compounds Scientific Reports
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