AHK Cu (Copper Tripeptide 3) Ingredient Guide Nubeean Noosa Glutathione Treatments 101: Part 1 The Mother of All Antioxidants BioDesign Wellness Center GHK Cu 1gram (Copper Peptide) (1000mg), Color : White, Purity : 100% at Rs 900 in Tiruchirappalli 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