GHK Cu is a naturally occurring copper peptide that declines with age. At 20: abundant. By 60: you have 60% less. What it does: Stimulates collagen and elastin synthesis Promotes wound What is the recommended protocol for using GHK Cu (Glycyl Histidyl Lysine Copper) peptide in clinical practice for wound healing and tissue repair? 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. Can You Start with 100mg of Gck Cu TikTok GHK Cu Peptide: What It Does for Body Composition and Metabolic Health