Cosmetics Grade Skin Care Anti Wrinkle Anti Aging Raw Materials Blue Powder Copper Peptide Ghk Cu Tripeptide 1 Ghk Cu 99% Purity Copper Peptide, Anti Aging Blue Ahk Cu Made in China.com When to Take Liposomal Glutathione for Maximum Benefits Altrient Glutathione , There is a new independent clinical study with @altrient_official Glutathione, showcasing how this powerful antioxidant can help reduce skin redness by 80% and BodyBio Liposomal Glutathione 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 I ran GHK Cu for 12 months so you dont have to (here are the results)