PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction A lot of people asked how I use GHK Cu (copper peptide) with a pen device, so here's a quick tutorial showing exactly how I do it. In this video I show how GHKCu Copper Peptide Therapy Skin & Healing Regeneration GHK Cu Revival Clinic Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu