TRY OUR NEW GHK CU PRETTY PEPTIDE. My friend Andy Hnilo uses GHK copper peptides in his Alitura skin care line, which helped him recover with almost no scarring from a horrific car accident that broke his jaw in five 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: What Is GHK Cu? The Copper Peptide That Rejuvenates Skin A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend