Absolute GHK cu Stem Cells & Peptide Hair Growth Serum and Shampoo MTS Mall of California 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact GHK Cu peptides are used to potentially promote hair growth, increase hair follicle size, and improve scalp health, often for conditions like androgenetic alopecia. As a regenerative peptide, GHK Cu is believed to