GHK Cu Side Effects: Copper Uglies What are the potential adverse effects of using GHK Cu (Glycyl Histidyl Lysine Copper) topical peptides for wound healing? My experience with the copper uglies! #peptides #peptidesforwomen #ghkcu #education #glowup Copper Peptide Serum for Dull & Mature Skin VALNCIA Some people notice their skin looks worse before it improves with GHK Cu. This temporary phase is often called the copper uglies., #skincare, #ghkcu, #skinhealth, #longevity, #peptides GHK Cu for Skin: SIGNAL's Guide to Rejuvenation