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: GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Injectable GHK Cu: Beginner's Guide to Copper Peptide GHK Cu Injection Pen Australia Subcutaneous Copper Peptide Inject+ Figure 2 from GHK Copper Peptide in Skin Remodeling and Anti Aging ! GHK Cu in Skin Remodeling Semantic Scholar