GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu Peptide Dosage How to Use Copper Peptides, Injections Neurogan Health Ghk cu 50mg 100mg Lyophilized Powder Peptide For Injection Dosage Form: Liquid at Best Price in Shenzhen Sino Kingtop Pharm Co.,ltd. 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: