What are the considerations and potential benefits of using GHK Cu (Glycyl Histidyl Lysine Copper) in a generally healthy adult female for skin health and hair growth? 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 uglies = temporary. When you start GHK Cu, you can get a spike in free copper breakouts, texture, irritation. It's not the peptide failing. It's your body adjusting. Happens fast Duo: Copper Complex Natural Topical HPIHair GHK CU Cosmetic for Healthy Skin Aging and Wrinkle Support Pure Prescriptions My insight on copper peptide aka GHK CU. Dont forget to take your zinc!