GHK Copper Peptide GHK Cu Tripeptide 1 Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health 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 : What time of the day do I take GHK CU? #ghkcu #mt2 #bp #transformation 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),