Why Use BPC 157+ GHK Cu Face Serum for Skin Repair? GHK Cu Peptide Serum: Copper Peptides for Skin Firmness Mythos Mythos Skincare GHK Cu Peptide The benefits, side effects, and more [2026] Copper Peptide GHK Cu Face Serum AS Wellness by Ageing Solutions A lot of people asked how I use GHK Cu (copper peptide) with a pen device, so here's a quick tutorial showing exactly how I do it. In this video I show how