Four reasons this serum belongs in your routine. GHK Cu Peptides that firm and support collagen renewal. Barrier support to keep your skin healthy and resilient. No injection. No needles. No clinic visit. 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 GHK CU Peptide Anti Wrinkle Serum Private Label Options Copper Peptide Serum Benefits: Complete Guide to GHK Cu Glimmer Goddess GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml)