Copper Peptide Hair Regrowth Formula GHK CU & AHK CU, Copper Peptide Hair Growth Treatment Serum For Men & Women Fruugo NO What Is GHK Cu? The Trending Copper Peptide Everyone Is Talking About Parlor Beauty Subcutaneous Injection Sites and Instructions for Safe Self Administration GHK Cu Copper Peptide Regeneration, Skin Renewal & Anti Age GHK Cu 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: