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 : Microneedling for Hair Growth: GHK CU Benefits GHK Cu peptides are used to potentially promote hair growth, increase hair follicle size, and improve scalp health, often for conditions like androgenetic alopecia. As a regenerative peptide, GHK Cu is believed to Copper Peptide 10% GHK CU, 5% AHK CU peptides Hair Growth Treatment Serum eBay Absolute GHK cu Stem Cells & Peptide Hair Growth Serum and Shampoo MTS Set Copper Peptide Hair Growth Serum for Hair Loss & Thinning Hair Feline Skinscience