Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Biossance GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK Hair loss drugs: What are the alternatives? Nurtural GHK Cu before and after : r Biohackers