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 99% Pure Copper Peptides (ghk cu) Great for DIY 1 Gram Etsy Copper Peptide Hair Growth Serum 10% GHK Cu & 5% AHK Cu 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