GHK Cu Peptide (50mg) Advanced Skin Rejuvenation & Healing Support GHK Cu LVLUP Health GHK Cu (50 MG) Sigma Compounds Copper, Collagen, and Controversy: Inside the GHK Cu Buzz GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu is a small copper bound peptide (glycyl histidyl lysine with a copper ion) found naturally in human tissues and fluids. Its levels decline with age, and it plays a role in tissue repair, regeneration,