New Peptides will be available at Optimal Healthcare starting in February!!! Each backed with COA ( certification of authenticity ) **Side note. If you are taking peptides make sure they have this. Does GHK Cu Regrow Hair? Here's What the Research Shows KLOW Peptide Blend 80mg GHK Cu, BPC 157, TB4, KPV 3 years ago I lost half my hair. I think its safe to say its back! Although my hair re growth journey was multi faceted, GHKCU and now KLOW were a BIG part of bringing my hair back to its former