2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Small molecules. Powerful results. Experience Peptide Power with Hairgenetix's advanced Copper Peptide Hair Growth Serum, formulated with 10% GHK Cu and 5% AHK Cu to support hair health at the follicle level. Helps Advanced Copper Peptide Hair Regrowth Formula GHK CU & AHK CU, Copper Peptide Hair Growth Treatment Serum For Men Women Fruugo NO GHK Cu Copper Peptide Hair Growth Serum Blackbird Skincare: Custom Skincare & Beauty Manufacturer Tailored Solutions for Every Brand GHK Cu Copper Peptide Benefits, Uses & Safety Intra V