GHK Cu for Skin Rejuvenation WeCare Pharmacy Peptides for Plastic Surgery: Weight Loss, Skin, Healing & Recovery 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? Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: