CongenPharma Patent: A synthesis method of Tripeptide 1 and Copper Peptide ( GHK Cu) and its application CongenPharma_Providing sustainable and affordable peptides Buy GHK Cu Copper Peptides (100MG) Shop 99% Pure Peptides 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 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 Don't Be Fooled by Color: Choosing the Right GHK Cu Copper Peptide Serum Peptide Labz