GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu and Its Roles in Skin and Hair Transformation GHK CU Copper Peptide, Face Cream, 2 oz (60 ml) Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: AHK CU + GHK Cu Hair Serum Pro 4800mg Hair Growth Neurogan