The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline What is the safe topical dosing, duration, and contraindications for the copperbinding peptide GHKCu for wound healing or antiaging? GHK Cu (Copper Peptide) is a naturally occurring peptide in the body that binds with copper to support cell repair and renewal. As we age, our levels decrease and thats where supplementation or New Biotinylated GHK and Related Copper(II) Complex: Antioxidant and Antiglycant Properties In Vitro against Neurodegenerative Disorders Oral Liposomal Copper GHK Liposomal GHK Cu Supplement