PDF] Effects of GHK Cu on MMP and TIMP Expression, Collagen and Elastin Production, and Facial Wrinkle Parameters Semantic Scholar GHK Cu (Copper Peptide) is a naturally occurring copper complex that decreases significantly as we age. This powerful peptide is known for its ability to upregulate the production of collagen and elastin, making If your goal is better skin not just the temporary glow GHK Cu is your peptide! Stimulates collagen + elastin Improves firmness and elasticity Reduces fine lines + GHK Cu Peptide in Dubai Skin Repair, Collagen, and Regeneration