GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK CU Copper Peptide, Face Cream, 2 oz (60 ml) Copper Peptide Microneedling Hair Regrowth Study (2025) Research Summary Hairgenetix 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: Glow Peptide Infusion Microneedling Hair Growth Therapy with GHK Cu Swiss Biolabs