If you think GHK Cu is just an expensive skin cream, we need to talk. The truth that 99% of people, and even many doctors, overlook is that this copper peptide is 7% GHK CU ACCELERANT Platinum Skin Care GHK Cu: The Regenerative Peptide for Skin, Hair, and Healing Pulse & Remedy Ozark Have you heard of GHK Cu the copper peptide your body is already making? GHK Cu (Glycyl L Histidyl L Lysine Copper) is a naturally occurring tripeptide found in human plasma, saliva, and urine.