GHK CU Cosmetic for Healthy Skin Aging and Wrinkle Support Pure Prescriptions GHK Cu is a naturally occurring copper peptide found in the body that plays a key role in skin regeneration, healing, and overall skin health. As we age, levels declinewhich is where topical Felicite Did you know GHK Cu is one of the most studied peptides for skin health and tissue repair? This copper peptide has been explored for its potential to: Boost Defy GHK Cu (glycyl L histidyl L lysine) is a naturally occurring copper binding peptide found in human plasma. As levels decline with age, so may its support of the biological processes involved in collagen production, skin GHK Cu Peptide Therapy Topical Cream BHive Management Koreana Skin GHK Cu Copper Peptide Mask Revitalizing & Firming Hydrogel Sheet Mask