GHK cu Copper Peptide: The "Glow" for Hair & Skin Seenergie PH Hair Growth Serum Intense with Copper Peptide GHK Cu Skinworks GHK Cu peptides are used to potentially promote hair growth, increase hair follicle size, and improve scalp health, often for conditions like androgenetic alopecia. As a regenerative peptide, GHK Cu is GHK Cu Peptide Before and After Results Neck Tightening with GHK Cu & SNAP 8 Hydra Needle Peptide Treatment Topical or SubQ GHK Cu? Same molecule. Very different purposes. Topical you apply it on your skin. Think of it as feeding your skin from the outside. In a 12 week study of