GHK Cu for Hair Growth? It Works But Only If You Do It Right. Everyone's talking about GHK Cu, but here's the catch most serums never make it past your scalp barrier. Vital+ Hair Copper GHK CU Serum Hair Therapy Serum Daytryp RX Let's talk about one of my FAVORITE glow peptides: GHK Cu GHK Cu (Copper Peptide) is a naturally occurring peptide in your body that plays a HUGE role in healing, repair, and overall Fleur Bloom Multi Copper Peptide Hair+Scalp Serum with GHK cu AHK cu PAL AHK for Thicker Stronger Hair Anti Frizz Curl Thickening Essentials Duo 30ml TikTok Shop