2 weeks in on GHK Cu and the glow is REAL. Brighter complexion More even skin tone Less breakouts Softer fine lines Thicker, fuller hair This is just Copper Peptide (GHK Cu) 2% Recovery Serum What Time to Inject Klow Peptide TikTok Copper peptide questions we get asked all the time , How often should you use it? Do you need to avoid the sun?, If youre new, start once daily (evenings are great), then build up if your skins