AHK CU vs. GHK CU Differences, Benefits & Which Copper Peptide Is Best for Hair Growth Neurogan Health AHK Cu isnt just another peptideits a follicle activator , Expands follicle size helping strands grow thicker and fuller over time, Extends the growth phase keeps hair growing longer Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact 6 clinical peptideseach designed to signal your follicles to behave younger, stronger, and more active., GHK cu Stimulates growth by increasing blood flow + collagen, PAL AHK Repairs +