GHK Cu Copper Peptide 0.5% (topical foam) Shell Medical Redness after a peptide injection can feel alarming but in most cases, its completely normal. , If youve noticed a pink or red halo at the injection site especially with peptides like GHK Cu Peptide Therapy Miami Beach, FL BODYWELLE Copper Peptides Ghk cu Skin Repairing Molecules Stock Photo 2739143747 Shutterstock The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline