ghk-cu prolongs anagen phase hair growth The Intricacies of Growth: A Journey Through the Four Phases Copper Peptide Hair Growth Conditioner
Description
Another BBB-crossing molecule with HGF-like activity, BB3, was employed in pre-clinical models of stroke, showing good functional improvements (Chaparro et al., 2015)

But if you just want the fast answer, most research shows GHK-Cu to be the more broadly studied copper peptide for both hair and skin

The science behind peptides Peptides are crucial to various biological processes
Once reconstituted, refrigerate at 2-8C
