Hyperpigmentation no more? GHK Cu Users Share Their Stories Aseir Custom BioCellMED: GHK cu Copper Peptide Face Serum with Plant Stem Cell Cu Peptide Before and After: What to Expect for Skin and Hair 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 6 month GHK CU check in Main takeaway: skin transformation takes time. GHK CU peptide binds to copper and activates genes involved in wound healing, collagen synthesis, and skin remodeling. On the face, this translates Copper Peptides Serum for Face 2% GHK CU & 4% EGF