Let's talk about one of my FAVORITE glow peptides: GHK Cu GHK Cu (Copper Peptide) is a naturally occurring peptide in your body that plays a HUGE role in healing, repair, and overall 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 Copper Peptide for Hair Hair Loss Treatment for Women STEMBOTANY Peptides for Hair Growth: GHK Cu, BPC 157, and GHK Biotin Absolute GHK cu Stem Cells & Peptide Hair Growth Serum and Shampoo MTS Mall of California Copper Peptide Regenerating Serum for Glowing Skin and Hair