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 GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect Amazon.com: GHK Cu Copper Peptide Supplement, Anti Aging & Hair Growth Support, Improves Skin Elasticity & Firmness, Thicker, Fuller Hair, Easy Absorption, Precisely Dosed, 90 Vegan Capsules : Health & Household GHK Cu Peptide Serum: Copper Peptides for Skin Firmness Mythos Mythos Skincare