Copper peptide questions we get asked all the time How often should you use it? Do you need to avoid the sun? If you're new, start once daily (evenings are great), PeptideLabz Copper Peptide 10% GHK CU 5% AHK CU Peptides Hair Growth Treatment Serum, Blue Price Amazon.com: Neurogan GHK Cu Copper Peptide Hair & Scalp Serum 2400mg, 4% Copper Peptides Fast Absorbing, Water Based Formula for Hair Softness & Shine Cosmetic Dry Scalp Moisturizer Spray, Made in USA : Copper Peptides for Skin: A Complete Guide Cellular Glow Hair Serum 10% GHK Cu + 5% AHK Cu Peptides