Copper Peptides for Skin: The Science, Benefits, and Best Practices Hubmed Copper peptide GHK Cu Wikipedia Super GHK Copper Intensive Cream by Skin Biology Aim For Wellness GHK Cu is a powerful copper peptide that supports collagen production, skin and hair health, and tissue repair. It may help reduce fine lines, improve elasticity, and promote faster healing. Want to learn Heard of the copper peptide everyone's talking about? Here's the quick breakdown: GHK Cu is a naturally occurring peptide in your body that binds with copper. As we age, levels drop and that's 7 days on GHK Cu. Here's my honest update. I'm not going to hype this up because the real results don't even start until week 46. But something is already happening.