Effects of GHK Cu on MMP and TIMP Expression, Collagen and Elastin Production, and Facial Wrinkle Parameters Patuxent Your body already knows how to heal. The question is whether the signals are still strong enough. One of the most fascinating peptides studied in regenerative medicine is GHK Cu, a Copper Peptides: Benefits, Results & Skincare Guide Glimmer Goddess GHK Cu supports tissue repair and regeneration GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy