Skin and anti-aging peptides represent a growing area of research into collagen stimulation, wound healing, and cellular rejuvenation. This category includes GHK-CU (copper peptide) and related compounds studied for their interactions with skin tissue, extracellular matrix proteins, and antioxidant pathways. All products are supplied in high-purity lyophilized form with full COA documentation. For research use only. Fast US shipping on all orders.