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 Mixing Snap 8, GHK Cu, and Syn Ake into one serum can give you some seriously smooth, wrinkle softening results. Not sure how to do it? Visit our store and watch the video. Amazon.com: Skin Perfection GHK Cu Copper Peptide Powder 99.7% Pure DIY Copper Peptides Serum for Face and Scalp Cosmetic Grade GHK Cu 1 Gram Creates Up to 100ml for Fuller Hair and GHK CU for Sale Tripeptide 1 3rd Party Tested US Made Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit