GHK Cu Focal Point Vitality Private Label Organic Professional Treatment Hair Loss Copper Peptide Hair Growth Serum10% Ghk Cu Hair Growth Serum GHK Cu 50mg vs 100mg: Which Concentration Should You Buy? 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