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. Glow Protocol: GHK Cu + BPC 157 + TB 500 for Skin Professor Peptides 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 Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms