Amazon.com : Truth Guy GHK CU Anti Aging Copper Peptide Serum for Skin & Hair Growth, with Carbon 60 for Fuller Hair, Beard and Lashes Boost Hair Growth & Reduce Aging Effect One Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact Before and after begins with consistency. Our 10% GHK Cu formula is engineered for deep absorption to support scalp health and visible density. NEW GHK Cu , Now Available at Carrington Medical, Healthier Skin. Thicker Hair. Real Science. , Were excited to offer GHK Cu (copper peptide) in our treatments the latest in regenerative 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care