GHK Cu Copper Peptide Scalp Therapy 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Copper Peptide Hair Growth Shampoo GHK Cu for Hair Loss Hairgenetix Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml) Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with