GHKCu Skin Repair Des Moines Peptide Therapy Iowa IV A GHK Cu face serum appears blue because the active ingredient, GHK Cu (copper peptide), is naturally a blue colored powder, meaning its inherent color transfers to the serum when mixed in; this blue hue Glow Peptide Protocol GHK Cu, BPC 157, TB 500 Neurogan Health PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction