If your GHK Cu or MOTS C injection leaves welts and burns like a hornet, it's usually not the peptide it's the technique. A few small tweaks can turn a sting into almost GHK Cu Therapy: Skin Rejuvenation & Healing A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend 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 GHK CU Infiniwell Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit