Skin Perfection Ghk Cu Copper Peptide Powder 99.7% Pure Diy Ghk Powder to Make a Serum for Face Hair Scalp 1g One of my patients has shared this picture with me as she felt it was odd that this peptide had this very vivid blue colour, while her other peptides had a clear GHK Cu Sky Blue Cream GHK Cu 50mg Copper Peptide GHK Cu Blue Copper Peptide + Betaine Serum Wonderlini exquisite skincare