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. GHK Cu Revival Clinic 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 You are wasting your peptides if you are mixing them with GHK cu., Lets not even talk about all the the blend pens being sold., Even Peptide companies are selling GHK cu Blends. They damage the other