Peptide Therapy for Hair Growth: Explore Your Options Before and after begins with consistency. Our 10% GHK Cu formula is engineered for deep absorption to support scalp health and visible density. The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline Copper Peptide Hair Growth Serum (GHK Cu & AHK Cu) GHK Cu for Hair: Can It Stimulate Follicles & Help Hair Growth? This is what the combination of microneedling, peptides and consistency can do These photos are results from scalp restoration using GHK CU from @neuroganhealth How does this treatment work? Microneedling is used