Copper Peptide Hair Growth Serum for Hair Loss & Thinning Hair Feline Skinscience 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Seraphime GHK Cu Copper Peptide Shampoo Anti Hair Loss Shampoo Promotes New Hair Growth, 11.8 Fluid Ounce TikTok Shop So excited about this peptide! GHK Cu serum and scalp solution available Fascinating peptide that helps to prevent and reduce fine lines and wrinkles. Applied topically on the scalp for hair growth.