GHK Cu Copper Peptide Collagen, Skin Rejuvenation & Hair Restoration 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 89030 95 5 GHK Cu Gly His Lys Cu Copper Tripeptide 1; Prezatide copper GHK Cu Peptide Dosage How to Use Copper Peptides, Injections Neurogan Health Get glowing skin with GHK CU peptide therapy GHK CU is a naturally occurring plasma peptide that significantly declines during aging. GHK CU exhibits anti aging properties by: stimulating collagen production improving skin elasticity and Subcutaneous Injection: What It Is and How to Give One