GHK Cu vs AnagenX: Which Peptide Approach Supports Hair Growth Best? GHK Cu for hair growth does it actually work? Short answer: no. GHK Cu can be great for skin but when it comes to hair growth, the evidence just isn't there. And this Why GHK Cu Became the Most Talked About Peptide in Cosmetic Research Research Guide Tide Labs Tide Labs GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health