Copper peptides are revered in the beauty industry for their potent ability to support both skin revitalization and hair health. 1  Today, we're diving into the Skin Perfection GHK-CU Copper Peptides Serum , a multi-use blue liquid designed for the face, body, and scalp. 2 This professional-grade, 1% concentration serum promises dual-action benefits, enhancing skin elasticity and supporting hair density. I’ve analyzed its potent formulation and complete application system to