GHK Cu Copper Peptide Shampoo Anti Hair Loss Shampoo Promotes New Peptide Labz 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 Copper Peptide Hair Growth Serum for Hair Loss & Thinning Hair Feline Skinscience Before and after begins with consistency. Our 10% GHK Cu formula is engineered for deep absorption to support scalp health and visible density.