GHK Cu Copper Peptide Neck & Face Serum 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 : Topical GHK Cu: Skin Benefits, Best Forms, and Where to Buy What time of the day do I take GHK CU? #ghkcu #mt2 #bp #transformation Copper Peptide (GHK Cu) 2% Recovery Serum 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),