If your GHK injection site gets irritated try this , 1. Dilute it by adding more water to the syringe , 2. Let it sit until it reaches room temperature , Also, make sure youre rotating injection My skin spot on GHK Cu : r Biohackers HKH Copper Peptides Serum for Face 38 Caps Anti aging Facial Serum Capsules with Hyaluronic Acid 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 GHK Cu Peptide Complex (120 Capsules), Copper Peptide Supplement for Skin Structure, Hair Texture & Scalp