One of my favorite peptides is GHK Cu. It has made such a dramatic impact on my skin in just one cycle I've been shocked! It supports collagen, healing, and overall skin 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 Peptide Therapy in Park City & Chicago The Vitamin Bar IV GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health Peptide Therapy Exclusive Med Aesthetics