Minoxidil vs GHK Cu Copper Peptide Which Is Better? Maneup Unpopular opinion: topical minoxidil isnt your best long term hair strategy., Heres why I often reach for GHK Cu (copper peptide) instead , Minoxidil works by forcing blood flow to the follicle., GHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair 12 Week Supply (30 mL) 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 TOPICAL HAIR TREATMENT CHEAT SHEET Ranked by clinical evidence. Minoxidil 5%: STRONG. FDA approved. Apply twice daily. Topical caffeine 0.2%: STRONG. Matched minoxidil in 210 man RCT. Rosemary oil 3%: PROMISING. Matched minoxidil